Hello I have to change the vario rollers with my Kymco Agility 50 4 bar scooters because these worn-out words have sprung up on this occasion I would like to install the Dr. Pulleys rollers, as these are praised in highest tones my question: which weights have you installed my worn-out rollers still have approx.6.3 grams so all 6 together 38grams answers would be Super Greetings Franz