You could take the view that for the cost of new coils - and I have to say I don't know how much that might be - but if you end up with your new engine running sweet as a nut then it's worth it. On the other hand - if it makes no difference then you don't pay him - assuming he doesn't want cash in advance?
Also - did you ever get a definitive explanation as to what actually happened to the engine that required a complete rebuild?
Also - did you ever get a definitive explanation as to what actually happened to the engine that required a complete rebuild?