Not sure about resolving the squeeking noise, but the pressure can change depending on the thickness of material on top of the heat press bottom platen. This can include any teflon sheets, platen wraps, threading the garment (one layer on the platen and the other below it) vs. double layer, and using thicker garments. So it is possible that the pressure can change without adjusting the pressure know.
You should try and contact Hotronix directly. They have people up there that do assist users with their challenges.
Best wishes,
Mark
You should try and contact Hotronix directly. They have people up there that do assist users with their challenges.
Best wishes,
Mark