Newcastle, theres no doubt in my mind that you know way more Enfields than i do, but have you checked to see if your forearm is tight? I have a '43 LB that i put a no-drill mount on 5 yrs. ago to hunt with. At the time accuracy was acceptable. I turned it into a 4T clone 2 yrs ago when the repro pads & mounts showed up. To start with, the forearm was fairly tight but it got looser over time and accuracy went to pot. Our deer season here lasts 4 1/2 months so it gets lots of use. I guess the wood dried out in the heat, as it stays in my truck for the entire season. I read Peter Laidlericon's artical on repairing the draws and decided to give it a try just to see what would happen. I performed the repairs according to his instruction and it made all the difference in the world. The rifle will now shoot 2 1/2'' groups @ 200 yds. and 4 1/2'' @ 300. Not bad for a 2 groover. Just a thought, may be something entirely different in your case.