I've just installed a parts catcher in my Puma 200. I've fiddled around with the little needle valve adjustments to try to tune the motion. My problem is that my parts catcher jerks downward a little too fast when it's retracting which can cause the part to tumble out. Even with the needle valve fully cranked down, the arm drops too fast before the backpressure on the opposing side bounces against the powered side.

Has anyone else had to deal with this? I'm thinking about adding an oil damping piston to the rack and pinion assembly to deal with this issue, but I'm hoping there are easier fixes out there.