I apparently knocked the little blue rubber gasket off my z-probe while working around in there. Seems to still work ok (don't know if it was for dust protection or some kind of mechanical debounce). Anybody know the part # or US source for that little z-probe limit switch? I'll talk to support and probably add one to my next e3d order (along with two Hemera Tools [someday] and a replacement hemera heatbreak [idiot...]). In general, any pointers to random 3d printer components would be appreciated. Paul