I was looking at the flexstrong ultralight truss rod https://alliedlutherie.com/collecti...ods/products/flexstrong-ultralight-truss-rods Enticed by the light weight, removability and tiny slot size (.28 x .28 inches) but worried by this in the description. The threaded component of the rod depends on a cozy fit in the slot to enable it to do its work without splaying open too much under tension, so the slot depth should be carefully routed so there is only a few thousandths of an inch of play (i.e., as snug as possible while still allowing the rod to slide in and out of the slot). If there is too much play, the male/female thread interface within the rod will gradually separate more and more (and possibly fully decouple) as the nut is tightened. It's a new product and I cant find any reviews or more importantly a look at it without the wrap so I can see how it works. Anyone got any stories to tell?