Thanks for the info Paul.
I just printed a great T2 male thread on my Artillery Sidewinder X1 v4
By fluke I got it exactly right!
I created the thread in Fusion 360 and then applied a 0.1mm clearance to all surfaces of the thread using "Press/Pull (q)".
I printed at 0.12mm layer height and it worked perfectly.
I made my part such that the threads did not rest on the printer bed to avoid "Elephants foot" on the first few threads. I made the threads at the top of the print so the printer was easily able to print them with no support etc.
I am amazed that the printer can produce such a fine pattern!
-Dennis