I have an Echo-1 VMG74 that I've been using for the past 2 years and I wanted to upgrade the inner barrel. I bought a Angel Custom 6.01mm inner barrel off evike & Installed it myself. The gun wasn't shooting straight, the BBs were curving down pretty badly, adjusting the hop-up wouldn't work, it would go from pretty bad to REALLY bad; it would hit the flash hider. I disassembled it thinking that I may have missed something, but everything is in place, the bucking, spacer, barrel was aligned correctly so I dont know what the problem was. I took it to airsoft outlet nw & they suggested getting a new hop up bucking, which I did buy, one of those blue madbull ones. But that only improved it very minimally. I dont have enough experience to know what the problem is so what do you guys think?
TL;DR BBs are curving down every since I bought a precision inner barrel, what's going on?