Hey great video! Couple of ideas. 1) for some reason, KZbin keeps cycling me back through videos of yours that I have already watched! Meaning that unless I purposely go to your site and pick a new video, I’m not making fast progress through them. Therefore, might you be able to give a link to prior videos (like where you made these spread sheets) so we can easily find and get to them. 2) Although Excel is a great tool (mostly because Micr$oft bought it from someone else back in the day), this parametric analysis cries for an analytic program that would allow rapid and easy parameter changes and re-computations (yeah one can do that with Excel but it’s a pain). Might you be able to share your spread sheets? If so, I’d be willing to convert them to Matlab (or open source Octave for those that can’t spare the $80 for the personal version) which I can share back with you for future use or posting. Thanks!