Just bought & fitted hugh's P M A bought Hughs because I thought I'd get a puller but missed the cut apparntly,whilst seaching localy for a puller was directed to the "Two Stroke Shop"he had a puller & was keen to cheek out my rotor & stator he advised me to have it balanced which he done for me, had to drill 16 indendtions to get it right,he also applied 3 extra coats to the stator just for good measure,not to sure if was totaly nessary but he reacons that I'f you exseed 5000rpm the balance factor starts multerplying enough to consider this,have started the bike & finaly got some decent volts but havent tested on the road yet,will keep you posted,the only thing that disapointed me that the keyway on the rotor is bigger than the 650 key,wish Hugh had gone a few more yards with this & stamped a timing mark on it,yes you can put your own on, but with no key once you remove it for some reason you back to square one & will have to create a new one,might try & get a key machined up to fix this.When the rotor was balanced the sticker was removed as it block's the 6 holes that provide venterlation(the stator does produce heat)will try & get some miles up in the near future to test the set up take care & have safe Xmas