Whether or this will apply to iron barrels, I don't know.
On my AVL in the mornings checking the oil - there is none on the dip stick. I tried via the compression release kicking the bike through about 15-20 times, then checking the oil. Welp there is was full. Possibly, for those experiencing the wet sumping problem, this may work.
I'm sure no expert on that, but if it works, great!