Scale went gradually kaput....grrrrrr

So I'm weighing once a week, logging, exercising my balanced card-weight training-abs-occasional yoga workouts, 6 days a week. And the numbers are obliging, dropping 1-2 lb a week, I'm feeling good. too good it turns out.

All of a sudden the scale goes out of whack, starts giving me all kinds of up and down numbers to the point that it can't be trusted. So I buy a new scale - bam - I'm 4 lb heavier on that scale.

This totally sucks!!

There's nothing to do but keep going. But still. Disappointing.