Well, for the auger. I have a Toro 522, I think it's 5hp / 22inch wide. Inherited it, didn't have space for it, so, it's stored outside. Runs great. However, last season I had to stop using it, as it would not move snow. A brand new belt would not make it through an hour's worth of snow. Figured it was just old, as I could not get any more tension on the belt. Yesterday, for the heck of it, I looked at it again. After pulling out the belt, I noticed that there was heavy rust on the pulley. I then spent at least a half-hour filing down the rust, in hopes that this might fix the issue. Note: it's always had the belt cover on it, so the pulley has never been rained on. Might the problem (the slipping belt) be fixed by this? Is polished rust more slippery than bare metal?