RE: fixing broken wing spars (actually ribs)
Your post did not say whether this is a kit airplane or an ARF. Not that it matters much, but I had broken ribs in 2 sets of wing that were on my Ultra Stick 60. I would have put the plane together and flown it if it hadn't been that the clear/yellow film was used on the wings. The manufacturer made it right and sent 2 sets of wings to put on the plane. Only 1 would have been enough if they had packed the first set correctly. By the time they were shipped to me, there were 4 broken ribs in each half. If you haven't had the plane that long and if it is an ARF you might try the manufacturer.