@martyn
Hi Martyn, further to your last reply, I'm afraid the latest update did not resolve the issue re the heading bug in the Turbo arrow III.
However a workaround has got it working. I noticed on the Black Square Baron 58 Controls options, that the heading bug could be moved via the Increase/Decrease knob on the right side of the Honeycomb Bravo. This was in spite of the binding settings for the Increase and Decease having disappeared, leaving only the Select Heading Bug . I removed those 2 bindings from Controls Options on the Turbo Arrow III, and the heading bug can now be Incr/Decr by using the right hand control knob.
Andy