I have fitted a set of 10mm front and 15mm rear spacers to my S3. Problem is locking wheel nuts? been to both the local Halfords and the longest ones they have are just long enough to get through the front ones. I dont think they even make it far enough in to stay tight. Will I end up having to buy 2 sets?! I know alot of guys on here run this set up so any help would be great.