Hiya jd45,
It's not really a problem per say with the triggers. The gpr/h come factory with a double lever double set trigger, which mean's after cocking,, the front trigger will drop the hammer.,OR the rear trigger can be pulled to "set" a spring loaded cam/lever,, that is then released by the front trigger at a much lighter pull weight.( make sence?)
I think what you are refering too is the adjustment screw found between the 2 triggers that is used to adjust "pull weight" of the front trigger after "set". Many shooters feel that after full adjustment to a light pull, the factory screw will not allow the desired weight.
A longer screw installed there could lighten the pull weight, but because of legal issues,Lyman,nor anyone else should/can recommend finding a longer metric threaded screw to replace the factory one installed.