Well, I think I found what you are talking about.
In "/etc/init.d/tvheadend" I changed DAEMON_ARGS="-f -u hts -g video" to DAEMON_ARGS="-f -u hts -g video -a 0"
I tried 1, 2 ,3 restarting Tvheadend after every change. 0 was the only choice that would show anything in the adapter drop down menu. Unfortunately it was still the Samsung S5H1411 tuner. I also checked the enum_val file. On adapter 0 it had narrowed to DTV. On 1 2 3 it did not narrow and had television, dtv, composite, s-video.