I alluded to the getting Bottleworks Aluminum z axis arms (http://www.bctechnologicalsolutions.com/arm-upgrade/index.html) and now I have them and they are installed.
The install was NOT as simple as the heated build plate install. The instruction for the arms calls for a complete disassembly of the z axis to remove the OEM arms. This took the better part of 2 hours (possibly some interruptions in between) but it definitely a far cry from the 10 min install for the HBP.
I am very happy with the result. The product is very professionally made and the instructions are easy to follow. One unexpected result is that I am getting much more consistent sticking to the build plate. I suspect that the OEM arms were slightly flexing when the filament was getting laid down and this is no longer happening. Some minor adjustments to the height that I am leveling at allowed the parts to pull off more easily.
Once again hats off to Bottleworks for another great product.