hi bigford , no the KAT is still going to be using the original cylinders, but I will be turning the pump speed way down, and see what happens.
This was supposed to be a budget build using all leftovers but we all know how these things get out of hand....
I had a plan to make the thumb mechanism today , but things changed.
Mario asked a simple question on the length of the KAT compared to the 4200.
Over night I hatched a plan, any way heres the results, still unpainted but structurally completed.
I think it looks way better 50mm longer.
cheers andy