I bought my 07 in December. I changed the clock time easily in March for DST. 5 weeks later in April, on "real" DST time, I need to change it again but am running into a problem: When I go into "set up" to adjust the clock, the "more" button is "grayed out" and inaccessible! When I push it, it just 'beeps" at me. So I have no way to change the clock time now. Any ideas?