The Postal guy just dropped off a box with an eBay SP20 from Florida -   Inside, the boards had shifted off their mounting rails to the point that the PCIe power plugs didn't line up, oops !  Took it apart and noticed several ASICs were loose.  Each heatsink is held to the board with a captive stud and spring, then locked into place with what appears to be a high-temperature hot-melt glue to hold everything into place, or in this case not holding it in place.  Any clue as to the correct glue used here ?  Hoping it's not too critical, looking for specs now.  Ugh.