ive fitted gaz coil overs all round all is good apart from the pasengers front arce shits 15mm higer than the drivers side both spring platforms are at the same hight the car looks level do i adjust platform so both arches are the same hight or what

 

could be due to different weight distribution or spring rating.

if you want the car to sit level and look right, then adjust it for that. if you want it to handle better, get them adjusted to give equal corner weights (brom at zoo will tell you how).