Irwin 37 CC
First and foremost, with any boat over 20 years old, is to check the chain plates from inside the boat, under the cap rail. We found out the hard way that they had been corroding and we lost the entire rig last year. Pull off the hull liners and look for rust streaks or any leaks at all. This goes for all chain plates and backstays. As you know the furler is an easy fix, even if the headstay needs replacing. Is it a ketch, cutter or sloop?
There are a lot of good sites for Irwin’s and lots of information on mods and such. Keep your questions specific and you will get a lot of specific answers. Good luck