F80 Cushion Issues

Hi guys,

Have had an Sole F80 for about 4-5 years now and recently I've noticed when I run on the treadmill my knees and back have really started hurting. I suspect it's possibly the cushioning, deck, or belt on my treadmill. It just doesn't feel right to me. I lubricate the deck pretty often.

I've taken some pics, if anyone could check them out or give me some ideas that would be great.

Here are the pics: https://1drv.ms/f/s!AkKgCFZQj_Ofg44AYRwv1OxIdNFlTA



  • I also wanted to add that the deck felt pretty smooth/flat. There was some fine lines in it but overall I thought it was solid, but I'm not sure what a bad deck looks like
  • Your deck & belt look a little worn, so maybe the belt is sticking/slipping which would cause the problems with your knees.
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