Hey all, I'm working on Dragons 250/9 and using an aftermarket 2cm gun. The question I have is how the heck do you center the hole in the kit part, so the new barrel is straight. Thanks and Happy model building

I'm not familiar with the kit, but on other builds where I've had that problem, I filled the hole with plastic tubing. If you can find one with the right size inside hole great. If not, go with one a little smaller and drill it out. Aluminum tuding also works, but it is a little harder to work with.

Jerry