Hey! I'm new to the forum so forgive me if I'm making a fool of myself somehow. I bought a WE tech SVD, (I belive they call it an "ACE-VD,") and ever since I got it the thing shot about 400 fps at best. I think it advertised shooting at about 500 but I'm trying for 450 to 475. I'm not sure why it's doing this, though. I've tried a few fixes for gas leaks between the mag and the gun, but they did nothing. I'm thinking about trying a stronger propellant like red gas, but I have no idea if that would work. I currently use green gas. It has the option for Co2 but I'd prefure to stick with green gas as I've heard Co2 can ruin seals. Is there anything else I can try?