Technical question regarding upper headset bearing and slamming my stem - Stock upper bearings on my Specialized are 1-1/8" Cr-Mo cartridge bearings w/ 20mm Cane Creek carbon cone spacer. I want to slam my stem and get rid of the 20mm Cane Creek carbon cone spacer (I’ve just cut it in half at the moment), but the spacer has a groove in it which stops the flop between the stem steerer tube and the bearings. I’ve tried using an FSA I had lying around but becasue that groove wasn’t present as in the Cane Creek spacer it wasn’t much cop.
My current bearings are stamped with ACB 4545 1125 BO - Does anyone have any suggestions on how I can slam my stem without the flop?
Thanks in advance!