just last week, i recieved some books on how to upgrade and maintain MP7 and AEP mechboxes, and V3 Mechboxes (because i was thinking about upgrading my CYMA AK. The books themselves were not very good) so i go to my dads since his house has got a workbench area. get to work unscrewing my MP7 (made by well, not kwa or TM) of course i did a safety check,then i removed the body pins, removed the top rail, disconnected the wires that power the gearbox. then i removed the back plate and there it was,...