So I need help with shimming my gearbox on my ICS CXP M4. This is only the second time I have ever shimmed a gearbox and it went fine last time. But I have run into a little problem. I followed this guide:
http://airsofttutorials.com/tutorials/shimming.html
The Problem I am having is the gearbox whines really loud. I have tried adjusting the motor height and the noise is still there. Also the trigger locks up and I have to put it into safety to reset the trigger, and the motorplate has cracked on me so am waiting for a newone to arrive. untill such time I cant test the gun.