I have not done a lot of scale replacements, but the few I have done were re-scaling blades that I really liked. When I separate the blade from the damaged scales I find that some razors have a thin inner washer (on the inside of the scales next to the tang) (some are a thin plastic and others are a very thin brass) and others don't have this inner washer, i.e. the tang is against the inner part of the scales. What are your thoughts on this? When you put on new scales do you always insert an inner washer (scales, inner washer, blade, inner washer, scales)?