On Yellow Flag Pits, remove all tire and fuel wear markers
without moving the car. Each blue (suspension) and gray (body
damage) wear marker moves the car back 1 space.
Module 8.4 "...Use the variable pit stop rule book for both green and yellow flag pit stop with the following rule revisions".
"Yellow Flag Pit Stops WILL ONLY APPLY IF discarding 1 Tire or Fuel token only."
For me the basic rule on Yellow Flag Pits Stop (12.1) is no longer used.