I'm replacing an old quill stem with a threaded adapter so i can use a 1 1/8" threadless stem without replacing fork or headset. I pulled out the old stem and the expander is very rusted (flakey).
Do I need to worry about a rusted out headset (feels fine, but I can't see too far down the tube)? Should I try to clean out the headset with a brush or something before installing the new quill? Also, I'm assuming I should grease the new stem before intalling--is this right and what do you recommend using?