Troy bilt tb30 belt rubbing rear end

[Refried Confusion]

I have a troy bilt tb30. I decided to change all three belts. Upon doing this I noticed the old drive belt that goes to the crank was rubbing the top of the rear end. It has actually wore a groove. After I removed all of the belts I checked all of the pulleys and they were fine. Tight but free and no play in them. I replaced the belts and the new belt is doing the same thing. Has anyone ever experienced this and how did you fix it?

 

[Refried Confusion]

I have a troy bilt tb30. I decided to change all three belts. Upon doing this I noticed the old drive belt that goes to the crank was rubbing the top of the rear end. It has actually wore a groove. After I removed all of the belts I checked all of the pulleys and they were fine. Tight but free and no play in them. I replaced the belts and the new belt is doing the same thing. Has anyone ever experienced this and how did you fix it?

I used OEM MTD belts.

 

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Thanks for the reply. No help. I think I have watched every video ever recorded on a tb30 and none have this specific issue. I am thinking the variable speed pulley may have just ground down over time.