I have a 4.25 and was getting an occasional double. It has EGW guts and Red Dirt trigger and had an extremely short, but still very pronounced reset. I'm not sure if the gun was doubling or I was bump-firing (or maybe they are essentially the same), but I would get an unintentional third shot with a FAST split when raging on close targets. Adding sear spring tension helped, but it didn't completely go away. I backed out my overtravel screw two full turns and solved the problem. While I really liked the super short reset, I suspect it was too short for my own good.
I have the EGW guide rod and use 11 pound Glock springs with some coils removed (I think I ended up at 1.5). Reducing the spring never helped the doubling.