Cheers for all the advice, after what 'Edge of Town' said I realised I'd have problems finding a non-900ss part to fit properly so I decided to bid on that 900ss engine case from Ebay (thanks for the link) and got it for £110 inc postage. Next is I'm going to try to get the original case repaired by brazing but if it doesnt work at least I have a replacement which fits. That'll teach me to be so heavy handed! Thanks to all, Pete
