Glued up some cherry panels for a project. Each panel approx 18"X24". Cupping (about 1/4")across the grain occurs generally on panel where the 11" wide board meets the 7" board . It was joined & glued with biscuits.I have since placed the panel flat on my workbench with weights on top..Are there any tricks, techniques to help flatten,restore this cherry panel to its former self...It will be an end piece in project and will be visible. Hate to discard and start over....Will appreciate your thoughts, ideas. Thanks...