Well Progrip didn't get back to me (they didn't come through!!!) so the dremmel was out. After using a dial caliper I found that the measurements for the rotor itself on the Progrip was too big when it came to the diameter overall. Nevertheless I took the measurements and dremmeled the progrip rotor down to the size of the factory throttle tube. Under the attachements the area in red was the part I had to modify. Afterwards the throttle worked like a charm.
However within this whole scenario the guide pin for the throttle tube assembly now broke off
...so its ebay for me and more downtime. One problem fixed and off to another....
For anyone in the future who is working on this type of setup be carefull with the guide pin and make sure to measure the new throttle rotor before installing. If you continue to have problems identifying the problem area you can always use a paint pen and see where the rotor is rubbing with the throttle housing.
To say the least this will be my final purchase from Progrip as customer service is just as important as the product. Nontheless the product is okay - I just expected more out of the "proprietary carbon fiber" rotor as the finishing was bad. I hope my experience helps someone else in the future.