Nice job Mike. Just goes to show you that where there's a will there's a way!!
Have you fired it up yet? The 2 speed fan feature would be cool to have.
I looked into the Savanna Stroker and was told that it would not fit in my PTG so I followed your Auber PID upgrade. Like you said, the PID works fine.
What gets me is that it's not that hard and/or expensive to build a PID controller ... so why don't more manufacturers provide that as an option? I know, I know ... it comes down to $$$$!!