Cowbelle,
Go to this thread: {
http://www.quiltingboard.com/vintage...m-t213849.html }
There are links to .pdf downloads for the owners manual and shop manual for the 401s.
Download them to your HD, then print them on 8.5" x 11" sheets and they will be much more readable.
As for the stuck parts, keep putting the Tri-Flow in them and working them. You might need to add a bit of heat from a hair drier too. There is a lot of moving parts, cracks, crevices, sliding, pivoting, and rotating things in the 401. But it will loosen up eventually.
Also if you remove the metal cam stack you can clean it and all the parts under it and lube the moving parts better.
Joe