Hi guys,
Thanks for the advice and tips, much appreciated. A mate of mine ended up putting the Opal into some thinners and the silver bail came off after an hour, the Opal was also coated in some kind of lacquer which also pealed off. ( Very dodgy job). the good news is the Opal is all good now and it just needs a bit of work on the cab machines to polish it up, which I will do this week at the club.
Thanks
Col