Thanks CGWolfgang
I did look at that before I started this, I based the model on German flak 30mm(rear) and the front on a chain gun, I been struggling with hydrolic think I have sorted them out. How meny times have I fallen into the old trap of seeing a tutorial (that looks easy) then finding out how meny thing can go wrong then you do it. I think Im learning more or loosing more hair...........LOL..........dave