The tranny on the Max is quite simple & easy to adjust.
The only time that I have seen any excessive wear on the spur gears
is when the engine was not properly lined up with the gears.
It is wise to keep a few 52T & 48T spur gears in yer tool box.
As well as lots of 5x10 bearings.

After I installed my OS 15cvrx, I melted the gear box. Precision bearings
& a steel idler gear took care of that problem.

I like my Torq 16s as well. Since I bought the truck, Ive picked up 3 xtra
engines & a case. I do believe that Force made the Torq series for them.

nedmx, have you been to the Duratrax site yet?
They still have great support for the truck to include all literature.

Tudogs