Quote:

The Jeep bucked more with the advance disconnected than connected.

Check rotor phasing. Drill a 1/2" hole in the top flat of the dist cap 2/3 of the way between the center terminal & the #1 terminal & shine your timing light straight down on the rotor at the offending RPM & see if the rotor blade is close to the #1 cap terminal then disconnect the vac adv & check again

live every 24 hour block of time like it's your last day on earth