Guy, I understand that the crank is being drawn through the two main bearings and catching on the crankcase inner. Head over to Draganfly, the parts diagram shows a locating circlip 65-2240, an outer ball race and an inner roller race, with a tubular spacer 66-660 between them. This spacer is either missing or is too short, wrong or damaged.
Looks as if the outer ball race locates the crank and controls any crank float, and if the bearing is a good one there will be no lateral movement at all. I could be wrong, but that's how I see it.
Swarfy.
