sometime if rear tires more grip its make weak turning.. so you can use Traction tires liquid on the front tires.use it a few seconds then dry with a cloth. test later if too grip on the front tire then the rear tire must be used as well. 1:2 ratio of front tires to rear tires. i use tires traction oil. or you can use baby oil. for better when the track is straight, you can set the front tire toe out 0.5-1 degrees. I hope the problem is solved.
is this digital servo? maybe a glitch or servo jitter. i use digital 1.7grm servo, sometimes jitter from servo with weak potentiometer. because it could not withstand the load. try to turn off the gyro on the receiver. Dont to tight screw on arm servo its make jitter too.
Hey man. This car is a hodgepodge. Some are 3D parts. Rest are actual Dnano parts. The rear pod and wheels are Dnano. I’m working with a couple of people to eventually have something that can be printed and put together that will work good. May take some time. Follow this channel and I’ll post updates as I makes progress. It will be a while though as it’s slow going