In the case of my Excellency VI, I think it's more an issue being an older bass, scale length, width of neck, and cut of maple. Now mind you that it is always playable but the neck has the tendency to flex because it is not as stable as it could be with Graphite rods. Add to the mix that I use a very low action and you can guess how that compounds the problem. I've talked with Jerzy on several occasions and have run several times thru adjusting the truss rod according to specific instructions from the man himself. As a credit to just how devoted he is to making sure every Drozd owner is happy with their bass, he is more than willing to resolve the situation. He is ready anytime to take the neck back and install graphite rods, and I am willing to wait for his new truss rod design and have that installed in the neck to cure the stability problem.
I have met and talked with Jerzy as well as Dan Lenard, and both are just simply good people. It should be noted that the redwood top/swamp ash body Excellency VI for sale on Dan's site (
http://www.luthiersaccessgroup.com) is a bass that I would own right now if I wasn't gassing so bad for a 6X2 fretless. I played the redwood Excellency at the 08 winter NAMM and that neck was rock solid.