Good evening Peter,
yes, the Soviet scores differ so much in different sources.
I think this website
http://soviet-aces-1936-53.ru/abc/m.htm
is based of the research results of Mr. Bykov and therefore the best source in the www.
Can you confirm that Mikhail Mikhalin (Михалин Михаил Федорович) has scored his 14+2 kills in the P-40 ? Or can you tell the the decimals of his shared kills ?
Michael