There is a port in front of the carb directly into the intake. Tee into that port, you should have constant vacuum at that port. A tachometer would be helpful also. Did you do the brake cleaner spray at the base of the carb, if there is a leak it will slow the idle slightly.
The speed bump thing has me thinking a thorough sight inspection of the electric is in order
"I like fun" Edd
Clawed: 90GW, TFI, Streetfire, 3"lift all spring, 31"BFG ATs, working RKE, Edel2131, Holly 1850, mild cam,
05 Renegade OME 927, 947, top plate, JBA 4.5s
"Just Jeepin it real"