I have found a bit more glue, a little more time to dry, and I think humidity affects that. In warm, humid air, I will put a bit of weight on the patch while it dries, Not fact, but to me, it seems to help. Glue used for patching is a challenge in keeping it usable. The tubes dry out too quickly, once opened. It takes a whole lot of patching to use up one of the larger cans before it starts to thicken to where it cannot be used. Maybe someone has an idea on how to prevent that.