So, I am not sure if this was covered anywhere but it's kind of a strange issue... If the poppet oring isn't sealing at all then it'll go from inconsistent to EXTREMELY low velocity and the gun doesn't want to cycle correctly.
So yesterday my first time playing this whole year. My invert mini would shoot like full velocity but when I would walk it. The velocity would drop so much and would only fly a few feet but if I shoot it 1 at a time then it shoots full velocity. I had it on 180psi and my blackcap was 3/4 away from being tightened all the way.
My mini is leaking down the barrel and pushing the bolt forward, you can push the bolt back but as soon as you move your finger it pushes forward and leaks some more.
I read the 1st page and just wanted to double check that this is the poppit, I have a rebuild kit but I'm lazy and only want to fix whats broke