Maybe I did not explain properly. I use a coax switch to select either
the FT-920 directly and thereby use the built in autotuner, or select
an external manual tuner when I bypass the internal autotuner. This
allows me to use either the built in autotuner, or the manual tuner,
depending on the band. Most of the time the autotuner is just fine
with the antenna I described. I don't understand why you thought I had
2 external tuners? Anyway, I hope this clears that up.

Jim/K2TL