I noticed my 20yr old Neptune’s belt slipping a little more than usual the other day. I ordered a new belt and it came within a couple of days with motor isolators included. Though I didn’t see the need to replace the isolators too, I did anyways (along with the belt). I watched the repair video on this website and did the job myself. Took all of maybe 30 mins. Now I am floored at how much better the machine is running! It doesn’t slam or bang up to speed on spin. It washes exceptionally well again and is even quieter than it was before.