Sorry, Gordon, if you'd like time to build a model that's OK. However, calculation shows that the distance moved by the top of a 32 foot stone from 70 to 90 deg is just under 11 feet. That's one hell of a lot of packing. Nice try though!
Not an insumountable problem, but I'm becoming a little warmer to the pole method, let's keep both in mind for now.
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