Hi Cort,
It's been some 20 years since I've had an Alfa pitman arm off so I don't recall if the arm is indexed or not. If it is indexed, then the arm can not be repositioned on the shaft. Which means that something in the chassis is not right. OTOH, if the arm is not indexed, then it can be repositioned. If this is the case, then reposition the arm but the toe may need to be adjusted again so as to center the steering wheel.
Cheers,
Jim
The only thing I have is the factory wiring diag. It's available on the web at http://www.users.on.net/~craigf/ along with all the rest of the TS manual.