I ll start by saying I’m not a stock maker . I have done a lot of woodworking. It sounds like the wood is not fully seasoned. Trying to force wood to do things against its will is like fighting Mother Nature. I think letting the wood become fully seasoned and stable then re inlet the wood and glass bed and finish would be better than forcing it to do something it doesn’t want to do.

Again I’m not a stock maker!

Good luck.