I have taken my car apart AGAIN to pull the front spring pads out and I discovered I have 13mm pads. ( I should have checked this when I put in the eibachs and koni's . . .Duh, but I was in to big a rush and forgot to do so) Anyway, were all cars assembled with 13mm pads up front and 5mm in the rear or was this a pot luck type of thing?