I agree with Tony, once you start looking the damage could soon mount up, what about the other end of the dizzy, inside the engine has that received any damage?
has the cab been disturbed ,bending the fixing bolts/linkages?
have any of the gaskets been jarred breaking their seals? etc etc.
I know its a big pain in the backside and you have waited so long for the engine, but let them have it back, its the safest thing to do, Failing that get the insurance to pay for someone like BAE to rebuild it for you.
Bad luck mate, keep smiling
