do you have the k factory 75 cc fuel tank......and if so did you have a slight interference between the chassis plate and the lower rear section of the tank. I had to dremel a bevel on the chassis where the rear of the fuel tank sits. If not, the sharp edge on the chassis will start cutting into the tank.
Had my G4 out this weekend. Last weekend I had huge amounts of oversteer and found I had way too much rear droop. Having corrected that I then had a push when neutral on throttle. Spent today getting my steering back. Car is perfect now.
This car is on rails and many others have noticed in the last couple of weekends (we've got a lot of people out running on the weekends right now as the weather has finally cooperated). I've gotten a lot of questions about the car; sadly, nobody even knows what a G4 is!!!!
They're about to find out!