It is time for a roller and belt change.
Need to change mine soon.
I am going with Dr pulley and a new belt.
Update: installed new belt, new air filter, new variator nut, de glazed clutch pads, and 14 g dr pulley sliders yesterday 7-4-15.
Have done two short test runs but, have not had enough time in the saddle to fully asses.
Update: Assesment on 14g Dr Pulley sliders. 9/5/15.
I purposely waited on a special run to assess the difference between DP sliders and stock rollers in my GT.
There is a particular place in the mountains where the flat spot in the power band really showed itself. It is a steep curve about 180 degrees where I had to go very slow to make the curve safely. Then up a 40 degree hill.
Yesterday I ran the gauntlet to compare.
My finding was, the flat spot in the power band IS still there running the DP sliders. But it was less pronounced. Considerably less.
Acceleration from a rolling start to 50 is faster and smooth.
I did not check top end because 99% of my riding is 65 mph and under.
My personal observation and conclusion on the change from OEM rollers to DP sliders is: There is an improvement in acceleration at normal riding speeds but, not mind blowing. It is noticeable but, slight.
The performance with stock rollers in the GT was good. DP, slightly better.
The DP sliders are supposed to wear better and longer. Cannot attest to that as my switch was recent.
I will say, I plan on checking sliders and belt at 10,000 mile intervals because of dirt inside the belt housing, belt wear, and noticeable glazing on my clutch pads at 10,300 miles.
The GT runs damn good with either stock rollers or DP sliders.
