RGMDPINGER

I RECENTLY ACQUIRED A '47 LC WHICH HADN'T RUN FOR 5 OR 6 YEARS. A PHOENIX SHOP GOT THE V-12 RUNNING WITHOUT MUCH TROUBLE, AND I STARTED IT MANY TIMES AND RAN IT IN AND OUT OF THE GARAGE WHERE I HAD IT STORED. TRAILERED IT TO MY HOME 200 MILES AWAY, AND NOW, IN SPITE OF GOOD SPARK AND STARTING FLUID, WON'T EVEN TRY TO FIRE. THE SHOP SUGGESTED STUCK VALVES, AND THAT MAYBE TOWING WILL START IT-NOT TRIED YET. ANY IDEAS?