Is the trigger limp, or are you pulling against some amount of pressure?
What input pressure are you running? Is it going directly to the valve or through any other form of regulation/restriction?
You want a credit card's thickness gas between the back of the trigger and the trigger rod when the marker is pressurized. If you have that, leave it. If you don't, post back, and we can walk you through the adjustment.
I've had good luck with Loctite Ultra Gel. It is a rubber toughened CA glue. It's good for impact resistance, and I can find it a lot easier/cheaper than some of the other recommended glues (IC-2000, LocTite 380). Be sure to clean the surfaces, scuff them up a little, and clean up any squeeze out when you press the parts together.
You may also want to glue your bumper to the valve to prolong its life.
Edit: Looks like OPBN beat me to it.
Last edited by nak81783; 07-19-2013 at 08:45 AM.
Reason: See previous response by OPBN
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