Thanks for the replies.

One thing I noticed before installing the new-style tensioner is that the original tensioner pulley was wider than this one. I don't have a picture but you can see how much narrower this pulley is by the remainder of the belt from the original picture post.

I double-checked that the belt was seated properly.

I'm guessing I ordered the wrong tensioner assembly. Does anyone else have assembly 1122000970 installed? What is the recommended assembly for (stock) SRT's?

I suppose I can order another idler pulley and replace on this assembly.

Thanks,
Jeremy