Have you checked the timing? it sounds almost as if the timing could be bad. 
   Another thing you wrote was that you had loaded up the cylinders with Marvel Mystery Oil (or something like that) It can take a very long time to work that out of the engine to the point where she will start. I can remember an old boss refilling the oil in the crankcase but accidentally pouring it down the exhaust. We towed that machine a long time before it finally started.
 <!-- s:oops: --><img src="{SMILIES_PATH}/icon_redface.gif" alt=":oops:" title="Embarassed" /><!-- s:oops: -->               Cal