I'm going to try again tonight on my GEO2. The only thing changed was the bolt. I'm going to try my stock bolt and the Lurker bolt in the Axe. I'm also going to test both Z2s on my GEO2. Don't see how the outlet cover would come out of place unless there was excessive blow back.
hmmm, interesting. How can you tell if there's blowback? Let us know what happens with your test, please!
I was shooting some paint today with a shake n shoot, and I did notice that balls would fly back up into the hopper a bit when shooting. The Z2's outlet cover is pretty solid though, it clips in pretty tight.
Everything that's happened in the past few days has made me decide to get a V3 Rotor as a backup loader. I still love my Z2, but I'm not the type of person who likes to take chances.