just got done reading the tbb chapter on heat treating, and i got a bow that i think id like to improve upon. its a very nice looking osage bow with copper head skins. its got a couple inches of string follow and came out lighter than i wanted. it also has a little bit of washboard effect on the belly, caused by scrapers and layers of early wood. id like to sand the belly smooth, hold it in a little bit of reflex and toast the belly just to see how it comes out. but im afraid it will ruin the skins. skins are glued on with white wood glue if that makes a difference. anyone done this on a skinned bow?