I guess I missed the whole thing !
I updated my CM15A early on new years day,
pull from closet,connect to PC, update time 1
hour and make a minor program change. My time
has been perfect for months... chimes and
lights right on time... guess I should have
waited a day or two so mine could have been
off an hour also... o well, a once a year
time change is no biggie... and I had to
correct for that "leap second" from the
atomic clock.
SteveRF