Ditto what Art said, Paul. If the kits have been stored in the house, you're good to go.

I've got a Bridi Super Kaos 60 under the bed that was packed in 1975. The box is falling apart, and the plans are brittle, but the wood is still good.

I'm waiting until I retire before starting it, so I can devote the time to it that it deserves.

Steve