In my case, the final solution was one that was mentioned earlier in this thread - simply bypass the thermal time switch and wire the bypass solenoid to a push button on the dash. I understand that this may not be acceptable to those with entirely stock cars who would like to keep them that way. The push button is, however, very discrete, at least where I mounted it. There was an unused hole in my dash, directly to the right of the steering column, that was covered by the dash facia panel. I simply cut a hole in that panel with a razor knife. The hole was the perfect size to accept a momentary contact push button from Radio Shack. Anyway, since performing this modification, I have never been stuck with a vapor locked system. I can manually introduce fuel, and that will get it running long enough for the MFI pump to push fresh, cool fuel to the injectors.