hi ,has anyone here ever fitted a parachute seal to a mk3?.i have used a new leather seal,that was ok . i have machined up an adaptor for a "O"ring seal but that led to harsh recoil.tried a PTFE seal but didnt like it. just wanted to try a parachute seal to see how it feels.not after more power,just like to try these things.perhaps someone on the forum could tell me the bore size of a mk3 please so i could source a seal without stripping mine first,the hw ones look easy to make an adaptor for..cheers..greasemonkey