i have the same kit ,i had mine skimmed by my local engeering company,i sent the calipers back to hispec with the bells to have them refurbed and reanodised and dont get me wrong they looked really good ,shame the person who rebuilt them did checked them properly tho cause when i went down the road,the seals wepped the brakes then failed i nearly crashed and my newly painted wheel were fucked,so rushed them down there the guy checked them and even tho u could see were the seals were wheeping he said they were fine but he had changed them anyway .sorry but if they were fine why change them ,just something to bear in mind