There is only three parts that can be, (if it is the same as a BE Nightmare)
Cupseal, two o-rings on the outside, one on the inside.
The question of what sizes to put in there has baffled me for a very long time. Maybe I'm missing some obvious problem?
Anyway, those are the parts that need replacing on the valve
Originally Posted by HurtCow
That's interesting... it's got a cat for a recoil pad. Must shoulder kinda awkwardly.