Definitely works now

code/__defines/misc_vr.dm

@@ -67,12 +67,12 @@
 #define MAT_PLASTITANIUMGLASS	"plastitanium glass"
 #define MAT_GOLDHULL	"gold hull"
 
-#define RESIZE_HUGE = 2
-#define RESIZE_BIG = 1.5
-#define RESIZE_NORMAL = 1
-#define RESIZE_SMALL = 0.5
-#define RESIZE_TINY = 0.25
-#define RESIZE_A_HUGEBIG = (RESIZE_HUGE + RESIZE_BIG) / 2
-#define RESIZE_A_BIGNORMAL = (RESIZE_BIG + RESIZE_NORMAL) / 2
-#define RESIZE_A_NORMALSMALL = (RESIZE_NORMAL + RESIZE_SMALL) / 2
-#define RESIZE_A_SMALLTINY = (RESIZE_SMALL + RESIZE_TINY) / 2
+#define RESIZE_HUGE 2
+#define RESIZE_BIG 1.5
+#define RESIZE_NORMAL 1
+#define RESIZE_SMALL 0.5
+#define RESIZE_TINY 0.25
+#define RESIZE_A_HUGEBIG (RESIZE_HUGE + RESIZE_BIG) / 2
+#define RESIZE_A_BIGNORMAL (RESIZE_BIG + RESIZE_NORMAL) / 2
+#define RESIZE_A_NORMALSMALL (RESIZE_NORMAL + RESIZE_SMALL) / 2
+#define RESIZE_A_SMALLTINY (RESIZE_SMALL + RESIZE_TINY) / 2

code/modules/admin/verbs/resize.dm

@@ -7,7 +7,7 @@
     
     var/size_multiplier = input(usr, "Input size multiplier.", "Resize", 1)
     L.resize(size_multiplier, TRUE, TRUE)
-    if(size_multiplier in range(RESIZE_TINY, RESIZE_HUGE))
+    if(size_multiplier >= RESIZE_TINY && size_multiplier <= RESIZE_HUGE)
         L.size_uncapped = FALSE
     else
         L.size_uncapped = TRUE

code/modules/vore/resizing/resize_vr.dm

@@ -61,6 +61,8 @@ GLOBAL_VAR(size_uncapped_mobs_timer)
 	return TRUE
 
 /proc/add_to_uncapped_list(var/mob/living/L)
+	if(L.size_uncapped = TRUE)
+		return
 	if(!GLOB.size_uncapped_mobs.len)
 		GLOB.size_uncapped_mobs_timer = addtimer(CALLBACK(GLOBAL_PROC, .check_uncapped_list), 2 SECONDS, TIMER_LOOP | TIMER_UNIQUE | TIMER_STOPPABLE)
 	GLOB.size_uncapped_mobs |= weakref(L)