Hi, I've just dismantled the three piece wheels on my car for a winter refurb and to change the colour from white to black! I marked the centres so that they go back together balanced and removed all the allen bolts. The centres came away fine. The two piece rims are still together - what is holding them together? Some kind of sealant, a gasket? I don't actually need to split them should I leave them be and hope that there aren't any leaks when I bolt them back up...Also, any advice on best paint to use on the centres, the rims will remain polished. Cheers, John.