There are only two settings that I can find... 1) Auto SC = OFF, GPS, GFORCE. I set it to "off". 2) SC Switch = ON, OFF, TASTER. I set it to "taster".

On the vario side, there is a dedicated SC line. It is fully functional in the modes I have set. I can manually ground those wires and it will toggle between cruise and climb modes. However, there is no dedicated line provided with the stick to hook it to.

I suspect the stick is wired for the LX9xxxx units, not the S80. I will take the stick apart today and check the wiring. I'll report back. Adding a dedicated wire to that switch and connecting it to the SC wire on the vario will definitely fix this problem.

I sent a note to LXNav through their "contact us" support link. This is the first time I've tried to contact them so I don't know how responsive they will be.

ZP