Does anyone know if the JM e2000 and Apex Small Seal will fit a shadowmatic? If so can I use grade 8 washer's to help dampen torque? My dad is having a real hard time shooting consistantly. I think I may sell this and let him use the AS 2250xt I am getting from mountain air. I all ready have datuna's trigger, it helped, but still feels twangy and he can't hit the target more than 1/2 the time. Shoots fine for me, though. Thanks, John