Cheers Nick, yes Iwan I use the Buzzweld products and have done for a few years now. A 2 coat apply of CIO is a good approach just don't be too mean on the coat thicknesses. I'm doing a 100 series at the moment using RE (rust encapsulator) as the priming coat, then CIO and then topcoating it with WAR (2 coats of each product). For heavy pitting, RE as the primer has good build and wetting. Leave to cure for 24 hours and then you have a good base to build up from. WAR is great for topcoat as it has a dry but slight wax type finish, repels water very well and has self healing attributes if dinked by stones etc but doesn't attract dirt like waxoil or dinitrol.