We had the same problem, but with the electric version. That squeaking is the sound of your drum about ready to slip off its pin (because the housing is plastic and the pin rubs through it). It's a design flaw and the drum will eventually fall off and you will need a service call (~$200). The tech also told is that it's a fire hazard. I recommend that you get a tech out now before it fails completely.
Scott
April 2005