The RC's are mass produced ,no way would I trust them for exact tuning or lubing anything!
On my A.E. MMGT. ,the factory forgot to screw the second gear down to the hub ,an my 5th scale Baja didnt even
have no grease in the trans spool!
So chances are ,the spring load wasn't adjusted right on...
The truck has a servo saver ,it may have been too tight to protect the servo ,it would be that silver nut that is
on the steering rack mounted on the chassy!