Decided to mod the 800 rod by switching out the straight middle rod to the White's S rod. I know a lot of folks like a straight rod but by switching it out, it eliminates the detector's handgrip from wanting to twist at the end of each swing. In a side by side comparison, both myself and a buddy with an 800 both like the feel of the modified version. The mod requires the middle rod from a White's DFX, or MXT. The rod needs to be drilled on the upper top end for the spring plunger and again adjustment holes need to be drilled on the bottom for length adjustment. The Lower rod from a Makro Racer or Kruzer is used as the lower rod from the Nox is larger in diameter. The top of the S rod also needs to be shimmed about .040" in diameter to fit snug into the Nox upper rod. Now it swings about as close to an F75 as you can get.
http://i17.photobucket.com/albums/b81/tbush/IMG_0271.jpg
http://i17.photobucket.com/albums/b81/tbush/IMG_0271.jpg