The key to a good stabilizing job is moisture content. You want the wood to be dry, the dryer the better.
I have had wood professionally stabilized that had been in my shop attic for 20 years and had it implode.
I finally realized that the wood probably had a moisture content of 10-20% just because of living in the humid south. I would send that special piece of wood to someone who would check the moisture content and dry it if needed before stabilizing the piece.