My G&G M14 DMR build has come to an halt Here's a picture. As you can see, the wrong part of the sector gear is engaging my half tooth piston. Any solutions? Is there any pistons with the teeth on the upper portion of the piston? Can I take a regular piston and dremel off the bottom? The piston is a SHS. The gearset is a 32:1 SHS. Yes, the piston is facing the correct way. Yes, the gear is facing the right direction. Yes, the gear is as low as it can go.