You're learning a little tidbit of information about some Carter carbs that us oldtimers know but often fail to mention. Due to the way the accelerator pump works, if the linkage falls off the default position is about half-throttle! That can make for an exciting ride if you happen to be in traffic or on a twisty road. The obvious quick fix is to shut off the ignition and apply LOTS of brake in a hurry! Glad you didn't wrinkle it up again!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!