These are the ones I'm going to be getting: http://www2.towerhobbies.com/cgi-bin...?&I=LXK847&P=7

Only because the local hobby shop guy was at the field when we discovered that my aileron clevis was slipping and he gave me two of these to replace both aileron clevises. He said to just buy some the next time I come in and give him two back and we're even. Seems fair to me, and they're nice clevises (very similar to the ones you linked to - minus the locking bit). Besides, if it happened with one of the clevises that came with the plane, it could happen with others. So I figure I'll just replace all of them.

And thanks for the good luck! I'll probably need it to get the weather to cooperate.