At that time I could not find any Suzuki CS80 it was so rare as a hen tooth in UK! And never found a one in 10 months so I gave it up and I went look for a CS50 so I will modified it to make it go a bit quicker like the CS80 do. March this year I have found a Suzuki CS50 1982 Roadie was left side of scrap yard in brambles at Liverpool and bought it for £100 and brought it 250 miles to home. Today finished my restoration and went rode it, I was disappointed that the CS50 barley reach of 29.3mph probably why I weight 14 stones! I was wonder if change the main jet of carburetor my is currently at 85 would it be worth if I go for 90 or 92? Or just waste of money and time? Do the two stroke like a performance air filter? What about high flow exhaust does it work? Because I have never own a scooter before so all this is new to me. I was hope to reach max of 36mph is good enough for me go to work through the countryside. Any advice would be a appreciate. thanks