Thank you very much for this data.
So a small number of the Erla G-10 had the -A series engines (so, in fact, not so much of a G-10...)
G-14 (with the -AM engine) was terminated (so the 109s with the 'classic' gun bulges) in November 1944. Still, it seems like the vast majority of the produced 109s from Aug 1944 until the end of the war were G-14/AS. Any production figures?
The Erla G-10 used AS engines becouse the DB 605 D had production delays becouse of allied bombing.
Gruppen that used G-14 ~ G-14AS:
III./JG 1
II./JG 2
STAB,I.,II.,III./JG 3
I.,III.,IV./JG 4
STAB,I.,II.,III., IV./JG 5
III./JG 6
II./JG 11
III./JG 26
STAB,I.,II.,III.,IV./JG 27
STAB I.,II.,III.,IV./JG 51
STAB I.,II.,III./JG 52
STAB,I.,II.,III.,IV./JG 53
I.,III./JG 76
STAB,I.,II.,III./JG 77
STAB,I.,III.,IV./JG 300
I.,II.,III.,IV./EJG 1
I./EJG 2
JGr.Nord
JGr.Ost
JGr.West
I./KG(J) 27
II./KG(J) 30
I.,II./KG(J) 55
III./NJG 11
NAG 1
NAG 2
NAG 3
NAG 4
NAG 14
Total number 1373, the last Bf109G-14/AS produced at Cham-Michelsdorf in March 1945. Regensburg production would have been at Waldwerk Hagelstadt "Gauting".
On a side note, the G-14AS had the lowest lost rate (all causes).
Sounding cool so far Ice Eagle/Horrido et al (and friends),
may the flight testing continue towards greater/closer representation of realism 
Just wondering hyperthetically, if for instance when your squadron gets very kow on A/C if you'd might have slightly higher chance of mechanical problems or slightly reduced power/reliability as the ground crew are overworked trying to get damaged A/C upto service strenght? Apologies if this is an wrong idea...
Well its like anything else. But the 'blackmen' took great pride in servicing the planes. But accidents/ failors always happened. Anyways alot of units had more planes then pilots (they had lots of pilots too.. but not all were cleared for combat). There was always a good one to fly.