diff --git a/include/REL/m433Dll.h b/include/REL/m433Dll.h
index 5028045a..fc0407db 100644
--- a/include/REL/m433Dll.h
+++ b/include/REL/m433Dll.h
@@ -1,5 +1,5 @@
-#ifndef M4303LL_H
-#define M4303LL_H
+#ifndef M430DLL_H
+#define M430DLL_H
 
 #include "game/object.h"
 
diff --git a/src/REL/m425Dll/main.c b/src/REL/m425Dll/main.c
index 9fc806f3..2c2d321c 100644
--- a/src/REL/m425Dll/main.c
+++ b/src/REL/m425Dll/main.c
@@ -462,9 +462,6 @@ void fn_1_F48(omObjData *object)
 void fn_1_FA8(omObjData *object)
 {
     M425DllUnkBss10Struct *var_r31;
-    s32 var_ctr;
-    void *var_r4;
-    s32 temp_r3;
     s32 var_r30;
     s16 *var_r28;
     s32 var_r27;
@@ -582,11 +579,8 @@ void fn_1_14CC(Mtx arg0, float arg8, float arg9, float argA)
 
 float fn_1_15EC(float arg8, float arg9)
 {
-    float var_f31;
-    float var_f30;
-
-    var_f30 = 360.0f;
-    var_f31 = 180.0 * (atan2f(arg9, arg8) / M_PI);
+    float var_f30 = 360.0f;
+    float var_f31 = 180.0 * (atan2f(arg9, arg8) / M_PI);
     if (var_f31 < 0.0f) {
         var_f31 += var_f30;
     }
@@ -684,6 +678,18 @@ void fn_1_1B40(omObjData *object)
             int x = 12;
             int y = 24;
             char *str = "%f";
+            (void)x;
+            (void)x;
+            (void)x;
+            (void)x;
+            (void)y;
+            (void)y;
+            (void)y;
+            (void)y;
+            (void)str;
+            (void)str;
+            (void)str;
+            (void)str;
             print8(x, y, 1.5f, str, sqrtf(fn_1_15EC(object->trans.x, object->trans.y)));
         }
         var_r31->unk_38 = var_r31->unk_04 * sind(var_r31->unk_18);
diff --git a/src/REL/m438Dll/main.c b/src/REL/m438Dll/main.c
index dc82ed96..cb329774 100644
--- a/src/REL/m438Dll/main.c
+++ b/src/REL/m438Dll/main.c
@@ -119,7 +119,7 @@ typedef struct M438MainWork3 {
     float unk_170[3];
     float unk_17C[3];
     u16 unk_188[3];
-} M438MainWork3; /* size =  */
+} M438MainWork3; /* size = 0x190 */
 
 typedef struct M438StructBss298 {
     /* 0x00 */ u8 unk_00;
diff --git a/src/REL/m453Dll/main.c b/src/REL/m453Dll/main.c
index f72224c2..2c099d2d 100644
--- a/src/REL/m453Dll/main.c
+++ b/src/REL/m453Dll/main.c
@@ -1630,20 +1630,7 @@ void fn_1_5670(float arg8, float *arg0, float *arg1, float (*arg2)[3], float (*a
             sp48[var_r30] = arg2[var_r30][var_r29];
             sp8[var_r30] = arg3[var_r30][var_r29];
         }
-        var_f30 = arg8;
-        var_r31 = var_f30;
-        var_f30 -= var_r31;
-        var_f31 = arg1[var_r31 + 1] - arg1[var_r31];
-        var_f29 = var_f31 * var_f30;
-        var_f28 = sp48[var_r31]
-            + (var_f29
-                * ((var_f29 * ((3.0f * sp8[var_r31]) + ((var_f29 * (sp8[var_r31 + 1] - sp8[var_r31])) / var_f31)))
-                    + (((sp48[var_r31 + 1] - sp48[var_r31]) / var_f31) - (var_f31 * ((2.0f * sp8[var_r31]) + sp8[var_r31 + 1])))));
-        if (var_f31 == 0.0f) {
-            var_f28 = sp48[var_r31];
-        }
-        var_f27 = var_f28;
-        arg0[var_r29] = var_f27;
+        arg0[var_r29] = fn_1_513C(arg8, arg1, sp48, sp8, 3);
     }
 }
 
diff --git a/src/REL/option/rumble.c b/src/REL/option/rumble.c
index 4a52323d..aeae0f72 100755
--- a/src/REL/option/rumble.c
+++ b/src/REL/option/rumble.c
@@ -197,12 +197,12 @@ static omObjData *CreateHand(void)
     return hand;
 }
 
-static void KillHand(omObjData *hand)
+static void KillHand(omObjData *object)
 {
     s32 i;
 
     for (i = 0; i < 1; i++) {
-        Hu3DModelKill(hand->model[i]);
+        Hu3DModelKill(object->model[i]);
     }
 }
 
@@ -222,21 +222,21 @@ static omObjData *CreateSystem(void)
     return system;
 }
 
-static void KillSystem(omObjData *system)
+static void KillSystem(omObjData *object)
 {
     s32 i;
 
     for (i = 0; i < 1; i++) {
-        Hu3DModelKill(system->model[i]);
+        Hu3DModelKill(object->model[i]);
     }
 }
 
-static void StartSystemMotion(omObjData *system, s32 rumbleF, BOOL slowF)
+static void StartSystemMotion(omObjData *object, s32 rumbleF, BOOL slowF)
 {
-    s16 model = system->model[0];
+    s16 model = object->model[0];
 
-    Hu3DModelAttrReset(system->model[0], HU3D_MOTATTR_PAUSE);
-    Hu3DModelAttrReset(system->model[0], HU3D_MOTATTR_LOOP);
+    Hu3DModelAttrReset(object->model[0], HU3D_MOTATTR_PAUSE);
+    Hu3DModelAttrReset(object->model[0], HU3D_MOTATTR_LOOP);
     if (rumbleF) {
         Hu3DMotionStartEndSet(model, 60.0f, 120.0f);
         if (slowF) {
@@ -267,24 +267,24 @@ static omObjData *CreatePad(void)
     return pad;
 }
 
-static void KillPad(omObjData *pad)
+static void KillPad(omObjData *object)
 {
     s32 i;
 
     for (i = 0; i < 1; i++) {
-        Hu3DModelKill(pad->model[i]);
+        Hu3DModelKill(object->model[i]);
     }
 }
 
-static void ShakePad(omObjData *pad, BOOL on)
+static void ShakePad(omObjData *object, BOOL on)
 {
     if (on) {
-        Hu3DModelAttrReset(pad->model[0], HU3D_MOTATTR_PAUSE);
-        Hu3DModelAttrSet(pad->model[0], HU3D_MOTATTR_LOOP);
+        Hu3DModelAttrReset(object->model[0], HU3D_MOTATTR_PAUSE);
+        Hu3DModelAttrSet(object->model[0], HU3D_MOTATTR_LOOP);
     }
     else {
-        Hu3DModelAttrSet(pad->model[0], HU3D_MOTATTR_PAUSE);
-        Hu3DModelAttrReset(pad->model[0], HU3D_MOTATTR_LOOP);
+        Hu3DModelAttrSet(object->model[0], HU3D_MOTATTR_PAUSE);
+        Hu3DModelAttrReset(object->model[0], HU3D_MOTATTR_LOOP);
     }
 }