Great Choice in boats Greencapt!
I have not had this problem with ours, but the yahoo group is very active and very helpful! I see that you have posted your question there, I would imagine that responses are on their way. Steve Birch is a wealth of knowledge. He is a member of the group and he designs and sells parts specifically for the Vega. My guess is that the coachroof flexed a bit...either the stays were tightened too tight or something like that that could have caused the fracture? Not sure...but you will get your answers from that group...no worries!