Using the engine crank shaft as a pivot could do some damage due to no oil lube. So, that's a non-starter. What I am doing now is laying a towel over the cockpit side just like the car mechanics do to keep belt buckles and buttons from scratching the paint. Then use a firm foam pillow to lean on so I can use both hands to reach everything and not break my back bending over the cockpit sidewall. Works for me, your results may vary.
Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD, USA smw...@md.metrocast.net