how do you measure it. Use of 4 electronic balances?
If not, there may be a consideable % of measuring error. I would consider the front being equal on the two side.
motor side =697g, Lipo side = 642 g , therefore I would use 40g~50 g of lead on the right rear part of the chassis. Balance the car from center line
I use 40g. My config. is similar to yours.
HW 60A + 8.5T motor
A reasonable idea. That means you have to add ~130g on the right side. This would put a lot of useless weight onto a racing car.
You have to consider the moment of forces (weight x distance from a pivot ) acting from the centerline (line splitting the car into left and right side). You should put all your things, motor, esc etc as near to centerline as possible. In my case, I added 40g and put it on the right rear part near the edge of the chasis. My car roughtly balanced . You can test it by placeing two screw drivers and tilt the car up (one screw driver under the front suspension mount and the other to the rear) . Hope that would solve your problem.
I think the "the turnover belt method" may be a good idea for optimised weight distribution. Wish you luck.
Good to see that there is a serious player like you.
I enjoy maintenance too , cause I am a new hand and need a lot of practise before I can safely play in JV. I mean "safe" for my car and other Chings' cars.
Regarding steering problem, I think I have similar problem as yours. I cannot remember which side. (My car is now in HK and I am now in Shenzhen, I kind of spending equal time in both cities) But steering servo still work and the turning angle are approximately the same.
P.S. I am using Savox 1251MG servo