Right, decision time. I can either rebuild using a 100x125 16bar norgren ram, which I already have, and buy a couple of 20 bar 2/2s and a bigger regulator lets say £250... or I can use the 135x50 I have and buy some HP 2/2s a small reg for the down stroke and a 3/2 for about the same cash.... watching a variety of low and HP machines on saturday, Im not so sure as to the route to take, I dont want to build a completely mental gravity like thing, but would appreciate a bit more power. running the calcs through Noels spreadsheets things come out pretty even.... I hereby start the Low pressure high pressure debate.