Finally got the spinning disk motor on my Spirit working today, but had to disconnect it right after, it was so loud I couldn't hear the sounds at all. I found a few people online saying that they sent their motor to PBR and got it rebuilt, but it sounds a bit expensive, so if it's still going to be audible afterwards I probably won't bother. I've never seen another Spirit with a working motor, so not sure what they're supposed to sound like