Does any part of the linkage contact the engine or firewall in any way? If you shorten the rod, it should merely raise the gas pedal up, unless of course the bellcrank hits the back of the motor.
"For those that will fight for it...FREEDOM ...has a flavor the protected shall never know."
Semper Fi! L/Cpl Edwin L. "Tim" Craft, B Co 3rd AT's, Khe Sanh Combat Base, February, 1968