Thanks for the advice. It looks like there is some conflict on optimal spacing between kyes and tonercable. One says 2/3 wavelength the other says .94.
http://www.kyes.com/antenna/stackluge.html
http://www.tonercable.com/assets/fil...ce/antenna.pdf
Interestingly, kyes also says that spacing
greater than one wavelength will actually reduce performance which would explain what I've observed with my own stack.