The fuel cap was seized in place when it arrived but we eventually got it apart after copious applications of WD40, but I'm not sure how it goes back in; Does the rubbery surround come out with the cap or should that stay behind in the tank ring?
Oh, and the eagle eyed will spot the instrument pod hanging off which will get fixed with some plastic padding or the new magic Sugru stuff I suspect...
More news as and when...Thanks everyone for the assistance; It's been an 'experience'