I am working on a bike with a rough running headset.
I am stumped on how to extract the bearing cartridges, both the lower from the fork and the upper from the steering tube.
I don't want to force things.
The lower looks as if it just needs to be gently pried off - with a stiff knife blade?
the Upper? is solidly set in the steering tube. Do I knock it out as I would an upper race?
and then even if I did take these to a shop for replacement (assuming they cannot be rebuilt somehow) is it even feasible for an 8/10 skilled mechanic like me (albeit most experienced on old traditional threaded headset systems) to reinstall these cartridges? or is this an LBS job and so I should just hand the while bike over to them?