Hello Michael,

Yes I did, thanks. The distance in Z between the green and red point is 2.4351833. The angle between the green and red point when viewed down the Z axis is 71.9037512 degrees. I tried fiddling with the numbers a few different ways but am missing something. My uneducated guess is I'm trying to solve this linearly when the helix looks like it involves some higher math other than arithmetic. I found this article, it looks like something relevant, but I can't make sense of it:

http://tex.stackexchange.com/questions/129860/helix-on-a-cylinder