Believe me, I'd love to find that 47 year old manual, but up here in the mountains where I live there just arn't that many copies! Just kidding, I've built a lot of later year B/RB & A engines, but this is my first poly.

I found the pedestal plug hole you mentioned. I'm asuming there is a hex head plug down inside it (though I can't presently see it). Thanks! I think I can take it from here!