Hello Chris
Thank you for the excellent assistance. Your instructions were clear. I had never thought of macros for FSUIPC but they were as easy as you said they would be.
I ended up writing my own (I did one for the IRS and feeling bold, I did one for the RTO) and this is what I did (in case it is of use to others):
File Name: PMDG-IRS.MCRO
[Macros]
Module="PMDG_737NGX.dll"
1=irs-l-nav=RX27530*X8bcc,31
2=irs-l-off=RX27530*X8bcc
3=irs-r-nav=RX27550*X8bcc,31
4=irs-r-off=RX27550*X8bcc
File Name: PMDG-RTO.MCRO
[Macros]
Module="PMDG_737NGX.dll"
1=rto-set=RX22a20*X8bcc,31
2=rto-off=RX22a20*X8bcc
So, you have helped me to solve TWO problems, and for this I am very grateful. I understand FSUIPC a lot better than I did before.
Many thanks to you