Also, my b4 is a bit older than most. I honestly cant remember what caster hubs I was running 5 years ago. I know most people have switch to 30deg. And i "think" mine are 30, but unsure. Plus they are the old 2 hole style not the 3 hole. Is there any way to tell if mine are 20,25 or 30 deg caster? I really need to get a paint marker and mark this stuff.