My g&g f2000 has had semi auto problems for awhile now. After playing for a day, my semi just stopped working. Auto works just fine, but when i switch to semi, it is just a click. I have played a couple of games like this, but it is annoying and i want to fix it. Also, the plate in the stock holding the gearbox in has a screw with a deformed head that i cannot get out. I tried unscrewing it, but the phillips cross on it just went to a circle. Help with either problem is appreciated.