What a load of crap.
This is the reason I gave up on Kyosho after more than 10 years.....
Why didnt they come out with the full range of steel diff gears in the beginning? I bought 3 packets of the steel gears last year only to find out they were only the large gears and didnt include the small ones.
Went to the nationals and munched at least 4 diffs.....