Rick.  I agree with your resource article to a degree.  I have found that copper hurts my system more than helps it because of how and when I use my truck.  I follow your guideline concerning topping off and flushing the system, however, I do not use Max on a regular basis.
 
Copper is wonderful for heat transference (the best) but I have cleaned out enough copper fuel lines / brass valves / copper heat exchangers to finally switch over to Stainless Steel and Aluminum in my truck.
 
Recently, I have been playing around with PEX.  Granted, these metals (and PEX) do not transfer heat as well as copper, but I never get any poly from PEX or stainless steel.  Ounce in a blue moon, I will get a tiny build up with aluminum. 
 
Since I am a tinkerer, I am always looking for the end all solution to various maintenance / technological issues as they relate to wvo and my specific vehicles.  So far, I have been successful, but it is an ongoing labor of love (or hobby) for me.
 
I think it boils down to frequency of use, type of system built and installed, and more importantly, what year and make the converted vehicle is.  I do know that my converted vehicles have different needs and / or performance issues as it relates to WVO.
 
Example:  I have an 80-gallon tank in / on my Dodge, and I notice more negative issues with a larger capacity tank than with a smaller capacity tank.  This is just one of those things that I am fooling around with in order to better understand how stuff works / reacts.
 
Other than that, I keep learning and experimenting with different materials in order to come up with a completely maintenance free system. 
 
I think I have a better shot of inventing a perpetual motion machine!!!!!!!!!!!
 
Thanks for your input.
 
You Greasecar Guys do a great job.
 
Slate