Well i've done it! I bought some chrome cleaner yesterday cuz i had some seriously dirty exhaust tips :angry: , been like it since i bought it about 3 weeks ago(ish), i thought it would be enough to do the job, but ooooohhhhh no! tried it yesterday and no joy, so today i thought i'd dig out my spark plug gap gauges and got to work with the .20mm one ;) then used the cleaner to finish it up. tadaaa! worked a treat. cleaned the whole car whilst i was at it :D not the best pics as it's done with my phone, but...