We were wondering if anyone has a problem with the counter weight that rests inside the the tube (i.e. the support tube for the mast)? When lifting and lowering the table to make the bed up, it sounds like the counter weight may be rusted. We hear a slight grinding noise. The tube should be stainless steel and the only thing we can think of is that the weight is rusted. Note: It's possible that we had some leakage at the mast step (boot). Any ideas or suggestions? Thanks, John & Karen, "Hi"Biscus!