Tried using a hub before & different computers without much sucess.
Tried again, downloaded latest KKL drivers, run as XP compatible & as admin.
Connected to check to see if it works, disconnected then started bike & connect again. After a bit of fiddling & a couple of 'not responding' finally got it to work reasonably consistently.
Just have to hope Croft noise man accepts the laptop rev counter, can't see why he won't & that DD working tonight wasn't a fluke.
Hoping for fine weather now.