Scott - Thanks for the info. All this stuff is so confusing I probably
didn't do a very good job of asking the right question.

I think the current box has a ceiling of 10.5.

I'm currently set to 3.3. Not really concerned about battery life.

What I am concerned about, and if someone could tell me why I
shouldn't be, that would help a lot!

Is - With an adjustment appt. approx. once a month, and with the
typical increase of .2 for each appt., it appears that I would be 'bumping
up' against 10.5 very quickly. Surely they're assuming that most people
wouldn't need an increase close to the above for every month of the year??