Looking for 1-A W&S

Primary use for this machine is to drill and tap plates that are usually burn outs and not very square so turret works out well.
We tap up 3" 4 pitch through 3" thick plate.
I will try and not Type a book here but include pertanent information.

We are currently using a 1-A M-470 and it does the job well FOR NOW! It has issues.
I have removed the cross slide carriage(didnt use and dont need)to rob a pinion shaft that busted in saddle apron and now I have headstock gear issues.

Our set up is two jaw 12" sp self cenering power chuck that has different button locations for different size plates, We use a chart for laborer/operators to change over with ease.

We looked at a 2-A that was local (located in Ohio) and considered adapter plates etc. so i could stay with current setup but the machines traverse is not working and not sure what would be involved in repairing that.
Thanks for reading
Rusty

Hey Rusty, i realize this is a very old post but i am having a hard time finding much info on the 1-A. I have one that i found the cross slide and square turret cause ours was missing. I cant figure out what the brass screw nut attaches to on the carriage.I have attached a few images. I have the manual but cant find anything in any of the diagrams. Far shot but any help would be greatly appreciated.
Thanks,
Larry