Hay Hood,
When I clicked on Ref All the z axis moves first and trips the limit (the LED did not turn green, which if it did, would have indicated Homed)
I Checked out the switches and discovered that when I activate them manually they appear to click twice and when I release the lever arm it clicks twice again !!!
I have no idea why, but can only guess that when you order a package of twelve switches for approx. $10.00 from china, "you get what you pay for"
LOL
Any way I'm in the process of ordering a new set of quality switches.
Thanks for you help and take care
Jerry