We G17 Barrel/Bucking upgrade hopup problem
 

So I went to buy a ZCI barrel to play around with in my g17 and bought a nineball bucking too. The hopup unit is the stock one.

So what happens is that if I have a bit too much hop, the BB gets jammed and roll out of the barrel. If I have no hop, the BB just flat out roll out of the barrel after being chambered..Although if I put just a little hop, it works fine. This is kinda weird because obviously it doesn't happen with stock barrel and bucking...

The ZCI barrel hopup window is larger than the WE one...