Sadly, no manuals, other than the Haynes manual which is on back order. We could maybe lift the rotor and gearbox in one piece but it looks from the ground as if the legs of the gearbox are wider than the hole in the upper frame that it has to pass through, hence the damage just above the front mount. I'll try to get a photo of the butchery later this week.
10K hours on fixed wing but no rotary time so it is all a bit new to me. I'm more into wooden airframes and vintage cars.