Whilst moving the aeroplane around to get the other wing on I took the opportunity to sneak the engine around to the back of the plane and offer it up to the firewall. Discover I can't get the engine close enough to the firewall to install it, Hmmmmmm. Consider moving it aft on the stand a bit.
Have fun draping the upper cowling over it. All seems to line up pretty good.
Tried using furniture trolleys to move the aeroplane around with precision on my own. Doesn't work, but I can still pick the plane up with my back under the spar, if there is a 5kg sandbag on the opposite wingtip.
Try using furniture trolleys to move the aeroplane around solo. Doesn't work.