HSP 94123 Flying Fish build Part2

Building a HSP 94123 Flying Fish drift car from parts that came in a bag.
In this part i build the front suspension diff, spur gear, steering and driveshafts.
So far this is the kind of build i love to make and its pretty easy do make as well.
Bought it on ebay for about $100.

[@MrGallotole]

Hi, can you help me? I have mounted this hsp 94123 and it makes a lot of noise and I don't know if it is because it has a steel crown and pinion. thank you