Morning Duke,
I found this tutorial but it's apparently for the x737 project (free 737 add on for x-plane from the EADT guys)
http://downloads.eadt.eu/manual/x737landing_manual-v1.2.pdf
Apart from this I couldn't find much info on the issue apart from a few posts claiming this was a known problem and the system was bugged, but those were on older x-plane versions so I hope this problem has been fixed in the meantime (and we've both seen working demos online on YT).
All the best,
Uwe