they didn't look that bad, could have just cleaned them up. at least there were no horrors to be found like oil on them.
I don't think a semi will give the same results
look fine to me seen a lot worse.. atleast they not black or covered in petrol oil etc
Honestly the amount of horrid things ive seen come out of this car whilst ive been servicing it, im just astonished that the car was running!