Originally Posted by thaylog
It was a combination of 2 things. First the lv 10 does need a newer style piston. Second is the back field strip screw. I found that it was over tightend. It had a dead trigger and would not fire unless I loosened it. Now it works great.
ooh I forgot to mention that one. It also affects RT. I mark my field strip screws with a scribe when I find the happy place.