Read thru those tuning guides and keep in mind that you only need to move the needles in small increments, think of the needles as a clock face and make 1 hour adjustments on the needles, tuning is not difficult it just takes a bit of fiddling to get it running well
Thanks for the info however I have been in this hobby for a very long time. And I just need someone to tune this truck so I can sell it because I don't drive it anymore I now have a 1/5 scale gas truck.