Thanks, I had not see the eyebolt retrofit kit, but I did see the u-bolt...I think I may replace all 4 and inspect and reseat the chainplates, I wish this was the only intereting original piece of work I found....how about the sail track for the jibs sheet having bolts held in with only the sealant and no nuts on the ends....as its the same side of the boat I am guessing somethign happened with the foresail at some point... however there is no damaage I can see to the deck or the cabin roof but will look very closely next week
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You need install the backing plate retrofit kits(2 pair, forward and aft) for the padeyes that create the chainplates for the lower shrouds. That is a known issue included in a "known issue list" created many years ago by the Intl. Catalina owners association and acknowledged by the factory, which came up with the backing plate design you see in the CD catalogue. You can also get those parts from Catalina Yachts parts dept. since they still support the boat even though it's been out of production since 1991.
The genoa T track, which is the one that runs on the toe rail... is through bolted. That was the original configuration. If yours isn't through bolted then somebody made a crappy repair. If there is a T track inboard of the toe rail, which allows for more sail trim options, then it, too, should be through bolted. I have an inside track on my boat, along with the genoa track. It's thru bolted, of course, but I rarely use it anymore since I'm not as anal about trimming out the head sail as I near 80.
While you're in the mood, check your Cap shroud chainplates, (uppers), for water damage to the plywood bulkheads they're anchored to. Drill a small inspection hole to check for damp sawdust if you're unsure. The water intrusion source, it there is any, will be were the chainplate passes through the deck. If it looks dry, I suggest you still pack sealant into the cavity as best you can... can't hurt. Oh, make sure you use a flexible sealant.... a polysulfide type such as LifeCaulk. In a pinch you could use silicone but don't tell anyone I told you... 'cause sailors HATE silicone

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Even though I can't find my "known issues" list... I remember another important one... the through hulls. If you have the 'gate' valve type the are on pipe glassed directly into the hull.... you need to GET RID OF THEM and replace with proper bronze or marelon through hulls and seacocks. Can't think of anything else right now but if I find the list I'll post it. Good Luck..... take care of your boat and you'll have some great memories. I've had mine since 99, always kept it up, many many upgrades... like a dodger, new stanchions and double life lines, modern instruments, new nonskid, a bad ass rocna anchor, and much much more..... Gettin' old though and finding less time and energy to enjoy her........ so the day to say good bye is approaching.