How is the rear tang area? Over time, there was a lot of oil and other things that got down in that area and the wood often punked. Shims were used to raise that back up and thus restoring the barrel tip back down to contact the last 1" of the stock bed. I'm not clear if you have restored the front of the C stock but I'm assuming you have.
As the late Turner Kirkland was fond of saying, "If you want good oats, you have to pay the price. If you'll take oats that have already been through the horse, those come cheaper."