I bought an old, used, u-control plane at the swap meet part of the IMS show in California in 1983. It was banged around and stored here and there all these years, and it was used and god knows how old when I bought it. Bored one day about a year ago, I cleaned the crusty dust off of it, and took it out and flew it for the first time. No problems, and no degradation of the structure, covering etc.

AV8TOR