I came in at the tail end of your trials and tribulations with your car but from what I have read you have done everything within your powers to set this car right. As far as I can tell, you have left no stone untouched in getting your car going. There does seem to be a feeling that your efforts sometimes stalled or got extremely frustrating. And then you were able to drive your car for a while and WHAM - ANOTHER obstacle appears.
What occurs to me after following along here at home, is that by bad luck of the draw you got a tank of crappy gas. On the darker side, it struck me that you may have been the victim of a cruel and sadistic prankster. I hope this isn't the case, but it is something that "may" have happened..?
Many others have offered very wise and well informed advice - clean the lines, re-install the system, put in a new filter, check your gas before you fill up and maybe a locking gas cap?
Know that we all want you and your car to be successful and I for one have no doubt you will have many, many hours of fun driving in your car!
Keep the faith, keep your chin up and keep the shiny side up and the oily side down! :laugh: And give your wife a big BIG hug! Hugs ALWAYS make you feel better!