Really enjoyed reading your thread, just a few pointers, I have been helped here in the passed, by yourself and a few of the other guys and all been most helpful, the point is ,you like using the PTFE tape, whilst others don’t and I have been told that the Cap on the KK does not need to be really tightened, because it might distort the large o ring in the cap, I am still having issues with my barrels but just finding out the best way forward, what I think I will definitely do is purchase a bottom tap KK, also I have a sparkler tap, I might also try that