On Another front sports fans I have found the problem (to an extent)
I was using Octoprint to advance the extruder 100mm using the Extrude button after typing in 100mm.
This Issues the following gcode:
G1 E100 F300
For a great number of reasons (mostly frustration.) I decided to try to move extruder 30mm with the panel...
While it extruded slowly, it went to exactly 30mm.
I did this 8 times with the same result including 2 retractions when I over shot by a mm.
Then I dialed up 100mm and got 100mm exactly.
again it extruded very very slowly but that was the clue to where I should look next.
I issued another extrude 100 from Octoprint and jumped to the terminal window to see what the gcode was.
This is where I saw the F300
So I tried issuing the same code from the terminal but cut the F300 to F100 and Perfect hit every time.
I thought somehow it was skipping steps which is hard to tell at 16th microsteps
I tried adjusting the stepping current about 100mv either way and it didn't make a difference.
F150 under extrudes a small amount, but F200 under extrudes by almost 3 times the F150
And at F300 it's nearly 30%
I don't know if this is an compensation routine or a problem with my hardware.
But all the time I've been chasing this dragon, it was because I was extruding too fast according to something.
If you have any ideas please let me know.
By the way, All Power supplies are spot on.
This is all original equipment that comes in the full Wilson II kit, the one I purchased at the beginning of the month.
I had to replace the Mega 2560, and I'm using A4988 boards though 3 are not the same that came with the kit,
I love troubleshooting but I hate chasing dragons
Have a great day.