Maytag Performa Washer-tub off balance.

My Maytag Performa has been a great and reliable machine. I frequently do heavy loads and it hasn't been a big issue until recently. In the past month it has been going off balance nearly every load, no matter the size. I mean slamming against the cabinet and trying to run out the door! The machine has a "balance compensator" feature so it does not automatically stop. The machine is sitting level, but the tub itself is clearly listing to one side. I've checked the springs and they appear to be fine. Before i spend a bunch on parts, I thought I would get the proverbial second opinion. Snubber/Damper pad or something else?

I'm keeping this machine until it can't possibly give anymore, I'm not interested in a new one, too much negative press...I'd rather have clean clothes than HE!

Thanks in advance for your help!