Originally Posted by
nubcake
How do the wheels attach on your instep? are they they kind where you push a button in the middle of the axle and it releases two detent balls to let the axle come out? If so you might be able to drill and tap into the tube the axle goes into and put a set screw in there to keep the wheel from sliding out again.
Or just adjust the nut in the end to get the effective lenght of the axel back to its original lenght- if it is no longer properly adjusted.