I just modded my lnl just like cxwq's mod says to but I used 9/16 brass instead of 1/2. but anyway, it shoots worse than when i had the pvc in it. I also have 17/32 brass that I could swap with it but I dont' know if that would help or not. I don't know if the 9/16 is a bad size to use or if there's an air leak or what. I just need help.