ah ok, understand. But as far as i remember the throttle Lever had to move quite a bit before the acc.pump was activated in my case. So could still be that the acc. pump is your Problem.
yes it's something that I've been watching very closely. It does seem to move with the leaver and pump immediately...
BUT, it does seem I can move that arm and hold it by hand and it will move without the pump shot if I hold it back again by hand. I see exactly what you're talkin about..