I recently came by 2 aeg’s which were really old. One was an Ak-47, which when you pulled the trigger just made a small click. The other worked fine. I wanted to fix the ak-47 because it looked cool so I opened it up and watched a couple you tube videos and realized that because I had no idea what I was doing I had stripped the piston. So I took the working gearbox out of its gun and put it in the ak-47 (they are both v3 gearboxes), for a while it worked fine and then recently it just started to do the same clicking thing that the other gearbox had done. This usually happened when it was low on battery, but I charged the battery up fully and it still did it. I lowered the motor height and it made a grinding noise that didn’t sound good so I raised the motor but then it started clicking again. I ordered a new battery and am waiting for it but I was just wondering if anyone knew what was wrong. I really don’t want to disengage the ARL or open up the gearbox because I don’t really know what I’m doing.