Hi all Firstly i would like to apologise in advance if i have posted in the wrong topic or if this is a dumb post i understand that things are hard to diagnose through a forum lol but ill try and explain my problem as best as i can basically i bought this piaggio zip about a month ago and it has been a dream up untill one day i ridden it hard trying to keep up with a friend in a car down a dual carrageway it has a pm tuning 70cc kit and from a basic look i can see a polini variator and rollers and also a polini belt When i first got the bike on acceleration the scooter would be very front happy and the front would be up in the air and also reach speeds of 70mph legit but now I've noticed a lack of power... the front end isn't as happy and wont pop up in the air at all when warm only when cold a slight bit and also I've lost about 10mph off my top speed of 70mph i replaced the plug 2 days ago and the old plug was very grey'ish with deposits on... i understand that means that the bike could be running to lean??? am i correct??? could that be my problem of lacking power??? anyone know anything??? i thought possibly clutch or belt??? someone told me it could be a flat spot in my rollers but ive checked those and all seems fine with no visible flat spots all seems smooth and okay
