My Black & Decker has a handy trouble shooting guide. For a problem like yours one can try any of the following:
Decrease liquid by 2 T
Increase salt by 1/4 t
Decrease yeast by 1/4 t
After trying this with one adjustment if that doesn't work try 2 adjustments at the same time.
How do you store your flour? Outside humidity can absorb into the flour requiring you to use less flour. I see you are in the desert but are you having a "rainy" spell right now? Just a thought. Good luck. I love my bread machine.