Hi,
It has been my experience that wheels squeak if they are not aligned
properly. The support is either too tight or too loose. I give the wheel a
few spins to determine why it is squeaking. If the wheel is rubbing against
the two little bumps that keep it in place, I then pull the supports out a
little. If the wheel is loose and wobbly I take the wheel out. Push the
supports closer together, and then carefully return the wheel. I keep
spinning the wheel to make sure I get the correct fit.
One of these two things has always worked for me in the past.
Janet