Big Al is fitting the engine for me, I have just spoken to Steve Grey and found a solution to the problem, it seems that the chassis cross member between the engine and gearbox should be a 3 inch tube, not a 4 inch tube which mine has. Called Big Al and he had already recognised the issue and the solution which is to replace the tube with the correct size tube. I have a tendency of over re-reacting to problems, it seems that I should relax, and leave it to the experts. Thanks for the replies.