I tried searching but did not come up with much. I am looking for your opinion on the best belt to run on a T-Pro. I will be going through the clutches soon and I will be shimming the primary. I have been using the Ultimax XS 809. But on the last few i have ordered the design has change to shallower ribs on the outside of the belt. I am not excited about that. Any thoughts are greatly appreciated. Thanks in advance!