Originally Posted by
Jgwright
I cannot understand why you are losing sleep over this. Just replace them all with UP cylinders. That is what I do, and the UP cylinders I have had never leak and even can stand the piston shaft being bent and straightened.
John
+1 Problem solved in less than 5 minutes. I've had a dozen SM airframes and I've only had 1 cylinder that leaked. I've also had cylinders leak in BVM planes. In both cases I used UP cylinders as replacements.