Re the original question:
Everyone should be aware of the differences in autorotational characteristics at different ends of the weight spectrum.
The vast majority of practice autos we used to do in Hueys were at low to mid weights, but regularly we would load them up to max all up to do heavyweight autos. Fairly sporty at times - quite a difference, but the main things were:
1. You often had to carry some collective to keep the Nr under control.
2. The flare had to be started earlier and developed more and faster to slow you down and arrest the ROD.
3. There wasn't as much spare lever left at the end of the cushion-on.
All fairly obvious I guess, but a good thing to remind yourself of before going out with a full load.