I wanted to update my post. After taking the wheels off, the left side hydro bracket was cracked. I did replace all the brackets with the upgrade kit and the mower is running fine now. I recommend anyone with an older SD Raptor do a preventive maint and replace the hydro support brackets. I don't know if Hustler is now installng these on the Raptors, or when they started, if they are. Seeing, as I had to fix this issue, I might as well address the right hydro oil filter leak which I was planning on dealing with after the mowing season. Somehow, I missed that this OE Hydro Gear oil filter had a double O ring on it. I always lube the O ring when installing, but missed this when installing. This prevented the oil filter from fully sealing. with it's base. I'm up and mowing again. I think the bracket replacement will help with the belt slipping off issue as well. If this resolves all my issues, I'll be happy with the Raptor. Unless, there are some other flimsy parts that'll need replacing.