Yes, I actually changed out the "stock" 54mm tensioner for a 57mm one I got from johnny 5, I thought that would take care of the problem, and it did for awhile, but eventually the chain just stretched more! UPDATE!!! I pulled the engine out last weekend(way easier than I thought) I've got everything on the bench and have looked at the tools and parts that it will take and I got to tell you I'm actually thinking of just replacing the engine!!! its just not that much more! so what do you guys think!?