I went to the VatoZone and the old guy there told me to use SeaFoam. When I acted apprehensive, he told me that if it doesn't work, come back and see him and he personally would buy me a bottle of whatever FI cleaner I wanted...so I figured I had nothing to lose.

I'll give it a shot (just put it in the tank yesterday afternoon) and post my results in a day or so.

1970 Dodge Charger R/T Hemi Orange U-code 4-speed
1971 Jaguar E-Type Series 3 V-12 4-speed 2+2 Signal Red.