I think you nailed it here. Today when I was putting on the dust shoe I had to adjust it’s height a bit. The magnets are pretty strong and I noticed out of the corner of my eye that the belt and pully were moving when I was adjusting the shoe. It was then that I realized that my left hand was pushing down on top of the router moving the carriage down a bit.
I removed the shoe and moved the XY so the bit would be out of the way of any material and I hit the go to Z button and the bit dived to below the material surface. I reset the Z again, replaced the shoe being careful not to touch the router and have been running today without issue.
I think we got it!
Thanks for everyone’s input. I still think I should ground that hose as it does build up quite a bit of static over time in the cold dry winters.
Stuart