Can you post pics and a description of what you might restore?
A rusty blade can be polished, dull edge can be resharpened.
If the leather washers need replacing, you'll need to remove the pommel which may require destroying the pins in order to extract them:
http://www.allaboutpocketknives.com/knife_forum/viewtopic.php?t=32026
Once the pommel is removed, you can remove the leather washers and stack new ones into place, reattach the pommel, and grind the leather to shape:
http://www.bladeforums.com/forums/showthread.php/953911-Restoration-of-Grandpa-s-hunting-knife
If the leather is in good condition & doesn't require replacing, you can use a long needle & syringe to inject epoxy along the tang to eliminate wiggle when it cures, but keep in mind that you need to get enough epoxy in place to fill the spaces along the tang and it will NOT come off when it cures, any future re-handle project will be a b!+ch to accomplish.
Also, AFAIK all Cattaraugus 225Q's were issued from the factory with gouges in the central leather washers to increase retention - those gouges are intentional and even 'mint' specimens include them.
Enjoy that knife, she was built to endure a LOT of abuse and is high quality for a $5 price tag!