True Greenhorn wands have full 2" tubes, not 1.75" tubes. They are also polished. They had a special Teflon-cored solution line and 5 jets on a single manifold.
I don't think Jeff is making them anymore, but I might be wrong.
John Olson has the closest thing to the original Greenhorn. What most people making "Greenhorns" now are missing are one or more of the following:
2" tube
hard anodized bracket to angle the jets properly
polished 5 jet stainless manifold
Hi-volume/flow, hi-heat Teflon-cored solution line
High polish on wand for easier cleaning.
If Larry wants his wand to clean as well or better than the Bentley he will need to change the details on his wand to make it more close to the original, which in my opinion, is still the best performing wand out there, with a pimped
Prochem Titanium running a close second and a Bentley with appropriate mods running third.
Take care,
Lisa