If you search on alignment here and on Yotatech you will find lots of info on doing your own alignment. It is easy.

The toe in spec is anywhere from 0" to 3/32 (.09375") per wheel. Total max toe is combined is then 3/16" slightly less than 1/4".

Take a string and run it around the front wheel and hold it up next the rear wheel. Use a ruler or tape measure to see if it is aligned to the rear wheel. I needs to be either aligned or angled slightly, meaning less that 1/8? difference on the tape measure. After adjusting, role the truck back and forth keeping the steering wheel centered. You won't believe how good this method is for centering the wheel. There's nothing like setting the alignment on the roads the truck actually drives.

Frank