Supposed to leave tomorrow on the long trip and I've been battling that stinking idle flutter. I lost. Here's what I tried:
checked and adjusted, and checked again, throttle switch
replaced 02 sensor
replaced temp 2 sensor
replaced air bypass valve w/used unit. Tried to adjust used unit
checked timing
checked AFM per Bentley
cleaned ground to left side of engine
replaced plugs, points, wires, rotor, cap
adjusted idle speed and idle mixture
pulled idle sub computer and cleaned contacts

It still surges enough to get the bus rocking at stoplights, and still runs smooth(er) when I disconnected the 02 sensor. Guess I'll just get used to throwing it in neutral at the lights for the next 8,000 miles or so. Or maybe I'll take it in and admit defeat.

Ideas are still welcome
Bob W.
'87 Westy -- "Bucky"