So regarding your exup vale, the 2 things that EVERYONE will say on here regarding the valve and the cover are -
- replace all 6 exup cover bolts with Titainium, the mild steel ones in there rust and can snap-off in-place.
- apply copper grease to ALL bearing serfaces of the cover & valve, every 3-6 months depending on use.
- Pat's execcelent website here - http://www.cartestsoftware.com/fz1/exupmaintenance.html
- And lastly familerise yourself with the following FAQ - https://foc-u.co.uk/index.php?topic=2027...#msg233723
- And this is what correct operation of the valve looks like - https://youtu.be/cm4I9uxodrs