Recently a buddy and i fixed the slam-fire issue i had with my type 96 and put it all back together. Basically the zero trigger is missing a screw and needs to be tightened often, which i believe caused the issue. anyway this gun has an upgraded spring and cylinder with the zero trigger to 500FPS. i believe the problem to be with the hop-up and barrel because they are both stock. im wondering if i upgrade to a PDI hop-up and tightbore barrel, if this will fix the problem. I'll need a new bucking too, aswell as barrel spacers since my inner barrel is loose and moves around. there seems to be a lot of vibration from the spring and my gun is pretty loud, im also wondering if this has somthing to do with the shots not being on target. any input here? im going with the hop up is whacked out since it shoots far left most of the time no matter how you adjust it.