I have an '80's vintage Winchester Super Express in 375 H&H. It is presently up at a friends and I have heard through the grapevine that its been neglected to the point that it has some rust areas on the barrel, bottom metal and receiver. A friend told me that it also is showing different colorations of blue on the bottom metal as opposed to the receiver and barrel. My question, is should I have it re-blued or leave it be. Will it loose any value by having it re-blued since it is a 30 year or so old Winchester. If re-blueing looks to be the best solution, I'll definately send it off to be professionally done. Thx.