So I bought the chromeSpaceLiner from Rat Rod(thanks, btw) and went to do a quick mockup, and found out that the lower headstock bearing cup is smaller diameter than all the bearings i have. So I popped out a bearing cup form a coastking frame and a firestone 500 frame, and while they both will fit the bearings, they are just too small to securly stay in my frame's headstock. They just spin around in the holes... Any advice? I didn't know htere were multiple sizes of bearings/bearing cups...