None of us knew what we were doing, luckily no one got hurt. I did use a safety harness.
It was kind of a hurry-up job unfortunately, and now I want to take the motor down to do some repair and tune up like making sure the oil passages are clear, straightening the fan, fixing the tail linkage and etc. I've already found a lot of info diagrams and pictures on gin poles here on this forum, thank you all for those.
I also need to make a new platform and would appreciate suggestions on wood type, thickness and width. I can get 1x12 oak or 2x12 pine, what sounds good?