I will double-down on what Osage Outlaw just said. Especially the part about degreasing the back of the bow. If you used ANY oil on the bow while doing heat corrections I'd even go so far as to get a can of oven cleaner and spray that on the bow, let it sit a while and then wash with hot water. Then I'd mis a little baking soda in water and rinse the bow again with that to finish the clean up.
Unflavored gelatin is just fine, not a problem. When rendering plants are breaking down all the leftover stuff that they don't even want for making hot dogs, the best and finest of the hide glue goes to the gelatin trade. It's colorless, odorless, and flavorless. #2 grade goes to high end book binders and instrument makers. Furniture grade is somewhere around #4 grade. Yeah, sometimes I look at a sinew backed bow and think of it as Jello Jigglers With Fiber!
