TPS question, Chasing the bucking bronco Options

[Rant6]

Hi folks. I am chasing what I understand to be a common 914 problem, and that is bucking or stuttering. I had a previous post about this, and I worked through some of the suggestions with no luck. I understand that this problem could be in the distributer fuel injection points or the TPS, and I also understand that the distributer FI points are NLA, and so I have not investigated this area.

I very carefully replaced the circuit board in my TPS, and I used a magnifying glass to insure that the metal fingers were in constant contact with the foil runners, and they are. This did not fix the problem.

In the TPS there is an arm that carries the metal fingers. On this arm are two metal spring strips that contact two metal pins. Under acceleration one strip contacts one pin and current flows through this path, and under deceleration the other strip contacts the other pin and current flows through that path. (I wish I had taken a picture when I had the thing out of the car.) On my TPS, there is a center point where neither one of the metal strips is in contact with either pin. This point seems to be where I experience the bucking - that is, just very slightly off throttle, and so I'm wondering: is one or the other of these metal spring strips supposed to be in contact with its respective pin at all times? If yes, what can I do to remedy this problem?

Thanks,
Mike