SteveRF -
My house was running fine for 3+ years with
my Cm11A, so the probelm is not signal
strength, noise, etc. I have absolutely NO
idea why the diag. unit did not work well,
so I sent it back for exchange. The
replacement unit was not recognized by
either of my 2 PCs, so at the point, I put
up the white flag and got a refund. I
really wish X10 would analyze some of the
returned units, like mine, to find out
what's wrong!