Just returned from the field. I am happy to report that my six shooter didn't leak and it takes 87 turns to fill a 20 ounce Dubro tank. My flying buddy has a Cermark and it requires 94 smooth turns to fill 20 ounces. This Cermark has several leak free gallons through it. His previous one leaked like a sieve after several months.
The six shooter,even when sturdily mounted does give one's shoulder and arm a workout,but is well worth it to get rid of the leaks.

I have used nothing but Cool Power for many years.

Dave