Hi Matt,
I have one, I bought new probably in the mid eighties. I have never really used it, but by coincidence I recently cleaned and lubricated it, with a view to cutting some marquetry. I need to make a new table, as the original has twisted, and I cut the marquetry with a knife, so I still haven't used it!
Mine is incredibly noisy, mostly due to the fan on the motor it seems. If I was going to use it regularly, I would consider replacing the motor with something else.
The saw is at work, and when I am next there, I will have a look at the pivot for you, possibly later today or tomorrow, and report back. I think the side to side movement is adjusted by nipping up the pivot bolts, which have a plain nut, a nyloc, may be better.
Anything else you need to know?
Mark