Thanks for your help guy's I think you're right, I will buy a new kit and take a mould of the part's, besides it gives me a good excuse to make another one, as they are such good kits.
Just spent a week building the engine pod feeling very proud of myself having made a lovely job of it. I started to de-assemble it and put the engine cooling tank down on the bench, then proceeded to knock over the liquid glue, when will I ever learn? If anyone happens to have or can advise me how to obtain parts h28 & h29 I would be most grateful