I've only had my 172 since Sept, so have only properly used clay on my previous Fiesta, which wasn't the greatest quality paintwork (albeit amazing for a 10 year old car!). I don't think I've seen clay work magic on an already decent surface, so maybe I'll get a new bar and try again in a few weeks. I did find that you need to get the balance of 'lube' to clay just right, because it'll smear and leave white, or just rub straight across the bug/tar/badger and not grip it...
I'd appreciate it if you could offer your PC services around the same time Rich as well if possible? Are you planning on doing some before FCS?