You reported it at just the right time. But I am surprised that nobody else reported the same issue.
Yeah I did a search and was very surprised to not see another - I'm barely getting my new machine up and running so I figured others would be breaking things.
Nope - no desire to maintain any 'fork' - just for understanding -
Then setting up a build is many hours that don't really gain anything. Just browse Github, and/or download a zip and unzip and use your favorite text/search thingie.
You guys Rock! I guess I had too many late nights and missed such a simple change. I now realize the Y endstop is indeed at the rear left of the machine as looked at from above, but... It's Positive and that's what I missed in the endstop configuration as you all have pointed out. I changed the Y1 to Y2 and lo and behold.. It works! Thanks to each of you for taking the time to dig through my config.g file and finding this!! Bless you all and merry christmas!!!
Got both my cartesian (Maestro) and delta(Duet Ethernet) running on 3.0RC1 with no issues other than those that were self inflicted. I don't have any specific printing requirements right now so I've just been printing calibration stuff and Benchys but all is working well. Thanks guys for all the work.