Wow. That is amazing comments Ron. Thanks so much.
I know realized this was a very poor design decision on my part. It as a super last minute addition to the board and I do not know what made me think current mirror. I am going hack on this part HV7801 with a 10mohm resistor. I think this should be a much easier route. Comments?
But there is clearly something for me to learn here.
I have 5 boards and they all behave quite similarly. Q1 (transistor that is supposed to mirror current) is, I think, always turned on a lot more then expected.
Why does this not remotely match the simulation?
For example, when R1 set to 1K, I get a I(R1) 11.4mA and a mirror current through I(R3) or 13.8mA. This was more than close enough for what I wanted to achieve.
In reality on all the boards, when R1 is 1K, then I(R1) is around 12mA (ok) but the mirror current I(R3) is 220mA. Similar on all 5 boards.
The only time the results are expected is with R1 set to infinity (no load)
Any explanation is appreciated!