light or heavy?

So I have been trying out a lightened main gear and a stock weight main gear. I found with the lightened main gear that i had a dead spot from 30-47mph till i hit the power band. After i put the stock weight main gear  on i found that I had better performance all around. even had a bit better take off. the only test i did with the stock weight flywheel was one yesterday where i had the flywheel keep slipping and today where i forgot to turn my pet cock on and ran outta gas a mile away from home and had to push it to the house. But on the way i stopped to talk to a nice older couple about my moped. The older guy owns a corvette and ever like 5 years from the 80's he traded his vette in for the newer model one.