The PDF manual says you can set the clock manually, but then follows with this note:
"You cannot change clock time after it is set by TV Guide On Screen
This only leads to more questions, like many other items in the manual.
Are Guide times for OTA digital channels the same as the PSIP time sent by those channels? Where does the OTA Guide info come from? If it's PBS, what if I can't always have my indoor antenna positioned to pick it up. (I have to move the antenna for different OTA stations.)
If necessary, can we purposely disable the Guide?
And on and on...
Like you, I have the T165 with all it's annoyances, so I'm leary of how the 3410A will handle unusual individual situations.
My feeling form reports here is that the 3410A will prove to be well thought out and a good performer if the Guide/clock operation doesn't cause problems in my setup.