Ok, I did try the "free wheel" test, by releasing the latch and manually
putting the door up and down. It goes up and down freely, with no binding
etc

I tried to do the eye to eye matchup with the two sensors, but when I plug
the receiver sensor in, the led on the transmitter goes out. This is not
right........

if i just keep power to the transmitter, the led comes on.......... but
when I power the receiveer, the transmitter light stays on, no matter where
i aim the receiver.... there is just no pilot light on the sending
unit........

from this, I am suspecting more and more that I have bad sensors.....

what you guys think ??

James