Me, too.
Depending on how much hassle it is to get in there - if it's easy, I will probably drop the Dr Pulleys in. Then I can always change back to Kymco rollers.
Stig
Once you have done it once, it is VERY easy to change them. I can take mine apart, change the rollers out, and have it all put back together again in about 10 minutes. It helps if you have a small hand held nut driver to bust the big nut loose.
I have been toying around with different roller weights and found some good top end speed increases with lighter weights. So, once I get a pipe on my Like, I'll try different weights again and then order some sliders. With everything being stock(accept the intake restrictors removed and a 140/70/12 rear tire), I got very good results out of 12.5 gram average roller weight vs. the stock 14 gram weight.