we have a contest 34, bought 3 years ago. We had sail during summer mainly in norway and sweden.
We didn't make a lot of refit espacialy compared with you. waouh! what a work you did. I"m really impressed.
During these 3 years we had only one serious problem. The starboard chaineplate ( not really the chaineplatte, the metalic piece inside the boat between the chaineplatte and the hull, i don't know the name in english)broke while we cross the north sea. Hopefully the boat is sturdy, and the deck did resist pretty well. so we kept our mast .
But i advise you to check carefully these pieces in your boat. the portside one did have tiny crack also.
For the rest, we had only minor problems.
Old sails torn => we learn to sew
diesel tank pipe broke => 100 liters of diesel directly keel trap
But now , this winter i will have more time for working at the boat.
I'm wondering about many things to add or refit.
I'm very curious about your solent stay... is it easy to handle? what jib do you put ? how did you manage the deck fitting and the mast fitting?