Exup

[Gnasher]

If the valve is seized in the bushes/housing, removing it might involve almost as much effort as getting it functioning again.  Finding a replacement pulley is much easier than finding an entire working EXUP.

It would be worth trying to get it working again.  Maybe remove valve temporarily, refit the end plate with a bolt/washer to blank the spindle hole and focus on getting the valve and bushes separated then refit when they're free-spinning as they should be.

:agree
Having no EXUP does make the bike a real pain to ride on the road especially in towns, gunning it everywhere isn't really an option.  I've seen many a seized valve, some really bad but only one I couldn't save.  As mentioned it will take almost the same amount of effort just to remove it as to refurb it.