If you build an original Ringmaster, remember that a weak spot was the joining of the wing halves. Many have split upon impact. Use modern adhesives there (preferably epoxy) and inspect the plywood joiner for the LE and TE and replace if necessary.

Good luck,
George

P.S. I'd keep all that Top Flite info in mind for your next ARF. I'm not saying to not get it, just look it over WELL and replace any suspect parts in the control system.