it is the using them as a pair im having a problem with. my car has the 1 white and 3 brown stripes as standard but as i had a snapped spring i didnt want to strip the shocker down to change a spring so i got a strut from a scrapper with 1 white and 2 brown stripes. ideally i would like to have both springs the same but i dont want to pay £60 for 2 second hand springs