Well, I got the throttle to move, I think the spring is a replacement - it seems way to tight to me. I also got the plugged sight glass holes cleared out. The "repair" here was to sweat some brass screws into the holes... though the brass fitting need to be chased to clear up the threads and I haven't anything for that. Not that I have any fittings to put in there!
I feel a rabbit whole coming up for me...