If going to use Epoxy try to get the Epoxy that comes in seperate bottles such as Hanger 9. It is much easier to use than the Epoxy you get at a local Hardware store. That stuff is in a kinda premix stuff with a plunger that pushes the two mixtures out at the same time. It works ok the very first time you use it then ones side or the other will stop up or get air or something and will not work right and very hard to use and get the same amount of each out. The other is easy squirt some out of one bottle and then the same out of another no mess no fuss and cheaper (ALOT) in the long run. Best to have atleast 5min. and 30min. Some fixes take a little longer. I am not that good a flyer but pretty good at fixing after i try lol.