You can trust the kits bolts, but I've always swapped them out for cap head bolts. Especially around the engine mount. Round out a Philips screw, or experience the frustration of sliding out of a flat screw enough converts you real quick. There's a few ways to thin epoxy. If you want a thin coating of epoxy for fuel proofing, I've taken a hair dryer to warm up the epoxy, but you have to move fast because it will also speed up kick off for curing. Sometimes guys will use acetone, paint thinner, and Isopropyl Alchohol. You might want to do a search here in RCU on thinning epoxy. Lots has been written. Thinning epoxy can weaken it, so I suggest you be careful. OK for fuel proofing, but weakens it as an adhesive. Hope that helps.