[SLESTAK75]

I saw this video: http://www.google.com/url?sa=t&rct=j...41248874,d.dmQ

After watching I was intrigued. I have not seen a belt travel all the way to the top a variator yet, which seems to defeat the purpose of a larger variator. The rear pulley only opens so far and when it reaches this point the belt can not travel any further. It seems reasonable that if the pulley opens further this allows full motion of the belt and highest possible performance. I also saw these on Ebay: http://www.ebay.com/itm/GY6-125-150c...c7dcb9&vxp=mtr

I don't know if these allow the pulley to open further or just change the power curve. There is not alot of info on these. This seems like a great upgrade to get all you can out of your gy6. But I was wondering if there is some sort of way to modify your stock pulley to get the same results. Any thoughts??