Ah, no biggie, I’m really, really happy with the tinyg.
Only reason I posted that issue was it was pretty much out of box – think all I changed was $xfr feed rate and $xvm max velocity, and did have the motor on the wrong port at first 😉 after correcting that it acted like $xam was 0 – g0xXX commands didn’t even show up as a change of position on the $sr.
Anyway, all is well now.