Get rid of the 5 minute epoxy, except for the rarest of field repairs. Thinning it with alcohol or acetone? Do that only with extremely slow drying epoxies like West Systems, or 24 hr. finishing resins. Any time strength is needed, go for the 30 minute.

Have any of you guys tried to beef up that spot in the fuselage before assembling the arf?

Thanks,

Ernie