I have the 45. I put in the TBT plastic bits and reduced the length of the original HW spring and polished the ends - a lovely smooth and reduced recoil action now. Despite very little lubing of spring and guides/“top-hat” (and a few thousand pellets) it still diesels for the first few minutes of each shooting session.

Agree with people above, grouping is affected by hold. I have lightened the trigger weight, fettled the sears and re-lubbed them, the result is a very nice and consistent trigger action.