Nothing official really, but I tell everybody I sell a bike to that if anything breaks or if they need help tuning or adjusting I would be more than happy to help. I would love to see some of those bikes again as I often suffer from seller's remorse but I have never heard back from anybody... I guess that's good though right?

To somewhat hijack your question...Anybody have any major regrets? I had a beautiful Sunset Orange '73 Super Sport in my size that had a stuck seat post I battled and battled with and finally sold cheap because I was frustrated...I hope to see that one come back some day (and I've contacted the buyer to let him know if he ever grows tired of it I'll buy it back from him).

(right after I bought it for $15...luckily somebody had swapped out the crumby old brooks saddle it came with but thankfully left me the original front tire...sigh)