18 Oct 1941 is the first mention I see of Bf 109F (That is the first mention i see of Bf 109F but I maybe missed something? I thought F2 were there for a while before F4
JG27 converted from Emil's to 109F4's; the only 109F2's operated in North Africa were by a Jabo staffel, probably not before 1942 as I remember it. Books are in storage so I can't check.
Btw, I my vol. 1 of the MAW series also has pages that are loose and falling out