I gotta say all the suffering with King Motor ended w the X2. Its true had a bad servo, but most RTR servos are crap. Almost no issues with the KM baja.
On the baja, got a no brand cnc open clutch bell carrier, stock clutchbell, spur and pinion gears. I did change to a one piece DDM cnc clutch plate. I saw many reports of melted and warped plates, binding under load, so went HD on those parts. So far after a runaway, multiple flips, bashing, and all staying together. Did the bolt/nut to keep together the pinion to the bell, red thread locker, no issues.
Its hit or miss on the KM and in my opinion with all rtrs. Someone mentioned, I think it was Revo guy, who had bad luck w the X2 blue servos, and w me, I even got them on the Baja, no issues, but mine was a nightmare w diffs and to others all fine and dandy. Its the nature of the hobby.
Thats DDM brand, send them an email. Those guys have parts etc, and when they want your money is all superb, like all sellers, ikr...
They sent me the wrong bolts for the servo saver upper arm. I sent them a email and the response was that I could buy them at any hardware store. I replied order not complete, they agreed and the morons sent me again the same wrong bolts. I gave up, drove to the hardware store. Give em a hard time, thats no Aliexpress, lets see if they walk the talk.
Good luck