I’m working on a H-I Tonka Queen rod that I picked up at a garage sale. How do I determine if I need to strip and refinish it, or if it’s OK as is, possibly adding another finish coat of varnish? The varnish on the rod looks pretty good, except for an area that's dark. Most of the guides are in poor shape, so I was going to replace all of them. The two top sections have issues, so I was going to scarf the good tip from the one with damage further down to the other top section that has a wrapped tip.