Hey guys,
My Echo 1 MK36c has been throwing a fit these last few days. I up-graded my piston, it was a G & G piston, and it was too tight of a fit so it would lock up my gearbox. I am back to my stock piston but now every time I slip in the motor and attempt to test the gearbox it fires for roughly 20 shots and then locks up. Or it'll fire 20 shots and I let off the trigger and it will not start again. Hte motor tries to move but it isn't able to do anything. Please help!