Wonderful pair of pairs. I'm not familiar with "re-lacquering". What is used and how is it applied? Is it a case coloring protective or waterproofing? Just the outside of the action?
My understanding is that it's a lacquer to protect the case colors - not to waterproof. I recently refinished a case-colored boxlock and stripped the existing lacquer off the receiver and will brush a thin coat back on.
Some people have used Tru-Oil with success.
I think Brownells sells a lacquer for this, but I suspect any good lacquer will work.