XRAY - Model racing cars

good morning, i write from spain. This is my question.

I wanted to know how much silicone is put on diff.
I put 5-7-3 loaded to full capacity, and the car is very nervous and does not turn in tight turns.
Is it better to fill them in half?

thanks

Fill them just until the cross pins (where the small gears are on) are covered with oil. Never full! If you fill them up fully they can lock up completely and also leak. If you have an accurate scale such as the hudy diff scale you can fill them to 2.1 grams.

Try 7 up front to calm it down off power, or 5/5/3.

Try the outer front shock tower holes for more steering response. Or try a longer rear wheelbase.