You know, i was just thinking about this and it hit me....you could square off the sides of the screw heads till they fit a open end wrench. That way you could tighten/check them w/o removing the wheel. A dremel with a cut-off wheel should make it easy. Only thing is, if you have to take too much off it may weaken the heads. But i may try this with my old ones next time the wheel is off.