Rampant:
This is a frequent complaint, there is a special lubricant that should have been used and can be used to stop the squeak, In some applications I have read about, grease fittings have been installed to simplify lubing these points.I purchased a complete Kit and the special lube was included,but if you shop around or talk to the installer they may have a source for the lube.--FWIW---Keoke