The RBX 270 I rescued a couple months ago has a few dings on the back of the neck which I'd like to fill and sand, and overall I'd like to refinish the neck with Tung oil, as I love the result on my kit build (yes, I have finished it, I need to take some photos). I was wondering what type of finish is currently on this type of Yamaha? On any Yamaha? Also what type of method should I use to remove the current finish, besides aggressive sanding? I also have a BBG5S, and I wonder if the neck is not oil finish, as I know Yamaha at one time used to sell "guitar oil", which is just some rebranded off the shelf product (something they do for their motorcycle maintenance products as well). I was wondering if it would not be possible to simple apply a new coat of oil on the neck for the BB, as it has a couple blemishes as well, but not as bad as for the RBX. Thanks!