I bought a watch case closer / crystal press off of AliExpress.  It binds when trying to cycle it.  I unscrewed the lower collar for the top and found a 3mm set screw in a 5mm non-threaded hole.  It is not a surprise that there was binding going on with that set screw swimming around in the hole.  The set screw was gouging up the shaft and damaging the collar threads (was rather hard to unscrew).  Has anyone had the same issue with these cheap Chinese presses?  I know that you often get what you