Thanks to all for your replies,
This is critical to solve as all of my engines and much of my rolling stock are Pennsy - dark, dark and more dark!
I did email Dennis Zander (what a nice man) and his response was to try to get closer or try to go higher. So. I have built some bases that will let me do both or one or the other. It will take some experimentation and I will report back. Block locations can dictate different approaches. Right now, I believe higher and a tad closer will work when the block signal in on a straight piece of track. I can get a little closer without my engines and cars hitting the signal. But if it is on the inner part of a curve, higher may be all that's needed as cars naturally get closer. We shall see. One thing that Dennis recommended that has helped some already is to cover (with your hand) the sensor when you adjust the sensitivity. That seems to have helped in testing. My testing has been to hold the signal at a certain height or closeness by hand. It seems that each of the above may help. The real test is when the blocks are affixed to a base that will "adjust" each block and to observe their interaction with each other operationally.
By the way, next on my list are four DZ-1060 PRR 7-light signals. Will they need a similar adjustment?
