Hey guys, I'm hoping you guys can help me. I'm buying my friends gun that i know needs repairs but im getting it fairly cheap so im hoping its a simple and easy repair. Its an Echo1 Sob1 and the last time my friend used it it would shoot full auto all the time and never stop shooting until he manually put it on safety or unplugged the battery. I think it has something to with a broken trigger contact? Can anyone help or know how i can fix it? Thank you! any help is appreciated!