Boca bearings are a bit expensive, but you can get the same if not better bearings fromRc-Bearings.com. I used to buy from Boca and they were alright, but expensive and when I tried Avid Ihad to change my bearings almost immediately, then I emailed Paul at
Rc-Bearings.comand even if he didn't have my bearing in stock he made sure I could get it.I haven't changed carriers ever since. Give 'em a try.