horseman2; You might want to talk to Dennis Sorensen. He posts here as Guntech. I have 3 541's, two "T" models and one "S". He added the second screw and bedded two of mine (third one had the second screw from the factory) Since both of the ones he worked on already had match chambers, he did not have to do this operation, but I am certain he could also do this part. BTW, He did a wonderful job on the triggers as well. These rifles will both average in the .2" - .3" at 50 meters for 5 shots, with a few groups down into the .1" area. He is a real accuracy buff, so understands what is required. He is at Brentwood Bay on Vancouver Island. Regards, Eagleye.