Board Thread:Questions and answers/@comment-25057645-20170618140859/@comment-27306930-20170620170735

Screw maps are an excellent idea. I also find it helpful to take a few pics of the internals from different angles right after removing the shell.

I agree with Mojo, if this is your first mod, you might want to start small with less expensive blasters. It is after all, a learning process, you'll be making some mistakes.