Not directed at you personally (because I think you live somwhere here in the Bay Area), but I really get tired of hearing this. Not everyone lives in Florida or Kansas where freeway overpasses count for climbs - some of us have to deal with protracted, respectable climbs every time we go out. Coupled with the fact that some of us (me, for example ) are about as strong a rider as we're ever gonna be. I'm not going to "get stronger" by mashing a ridiculous gear combo for my environment, but I might well ruin my aging knees. No, thanks.

RTC - you once asked me if the vintage Suntour Superbe stuff would work with the modern Campy 10 speed stuff, and the best I could offer you was "try it and see". Looks like you did, and it doesn't. Mix 'n match doesn't work great with the newer stuff, and you're not getting the full potential of the performance it has to offer when you try it. Go to eBay, get the proper Veloce/Centaur FD for ~$25, and be happy.

If the chain is falling between the rings then the chain is too narrow, the chainring gap is too large, or the FD is too wide for the chain and is allowing sloppy shifts - with poor and unpredictable results.