Originally Posted by
junkfoodjunkie
I like to use locking skewers on the rear wheel for this reason. It does not take but a few seconds more to get the wheel on and off.
Jake
I use the same solution on any bike I think I may have a problem with. The allen wrench allows good tightening.
First, though, I do think the smooth locknuts are helping this to occur, and would probably swap them if able.
Secondly, check to see if that axle is Ti. It tends to flex. I had to replace my Ti axles (on a set of DA hubs) with steel.