I have a 5" 625-2 Model of 1988. The other two are 625-3's. I pulled the -2 out of the safe after reading your initial post. I can assure you that there is no contact between the grip screw and the leaf spring. The trigger pull has no "stacking". There is no witness mark on the spring from contacting the screw. Holding the grip open, while pressing the screw in place and pulling the trigger, I observed a gap of at least .080" between screw and spring. I did notice that the screw is relieved, to add clearance for the spring (see picture below). Perhaps that wasn't always the case. BTW, both of my -3's came with Pachmayrs. I once owned a 5" -4 that came with a Hogue Monogrip.