Wow, thanks for taking your time and sharing your expertise with us.
I use heat lamps I purchased at Home Depot years ago. I keep them six inches from the wood for an hour. I have not burnt any stocks yet. I wrap the wrist, after removing the trigger guard and turning it 90 degrees, with gauze fabric and wrap with a string. I have been using Canola oil.
Many of my old SxS's have a lot of drop and I have been succesful in bending some of them up to modern dimensions to fit me. I have had splinters the size of a toothpick pop up in the trigger guard area but so far no breakage. I know I am taking a chance though.
After the Belgian gun's stock is bent today, I will be building up the courage to try the RBL.