If Nick clutched it, it will have Yami 8BU-00's w/ the 17.2mm riv's. Awesome clutching for 12 and 14 lbs, if your wanting to run 17/18 lbs you will have to add weight's. Like i mentioned before, the Dalton dpyr's are a very similar profile to the 8BU's (you already have). These 4 bangers are very sensitive to the profile of the weights, above are the 2 best set ups ive found for 12 and 17 lbs.
Cheers