sprchng --
Thanks for the kind words on the rod.
Interesting that you also don't like the "cam." I checked Minelab patents through a patent search, and didn't see anything -- so that probably isn't an issue, BUT...interesting that you feel the same way that I, and jas415 do, about that cam. The ONLY purpose for it, as far as I could tell, was so that once you have the rod inserted properly, your coil is "aligned right," relative to the ground. In other words, without the "cam," your rod is free to spin 360 degrees, until you locked the locking mechanism on the upper rod (and thus you'd have to be careful to align the coil properly with respect to the ground, before locking the rod lock). But, WITH the cam installed, you can't "spin" the lower rod (and coil) in a 360 degree circle. So maybe that's why it's there? Whatever the case, to me, it's really a pretty irrelevant piece, that probably really doesn't need to be there.
Hmm...
My next one that I build (I need two, only have 1 right now), I might try it without that "cam" and see how I like it.
Steve