Gary,
I've been using Canadian Tire bought "Lepage" Brand for years on main structural joints (Like struts and wing to fuselage joints) for years. It gives you 5-10 minutes of adjustment time, is inexpensive, and always available It's labelled as Speed Set Epoxy and once set is a truly "welded " joint. Be cautious, it can tend to expand on curing so don't overdo it!
Cheers,
Lance