I have recentley inspected a set of recondition wood blades for sale for a B model Hiller. The Blades have about 100 hours. Upon inspection of one of one of the retention straps, I noticed that there is a small separation in the paint/ retention strap , approximately 1/16" wide by 6 inches long along the back side of one of the straps. The leading edge of the strap shows no indication of movement. I know that the paint separation is indicating some movemen however all of the screws are tight and everything else looks fine. Should this be a concern, or is type of separation crack standard movement? If it is a problem,, what type of corrective suggestions are recommended?