Thank you Kwiatek.
BTW, I've tested on ATAG the story that the Emil now turns inside Spits: it's not true, from my humble point of view.
I got behind a Spit IIa while on my E-4, and when he turned I tried to follow it on purpose. Well, despite I'm not a novice 109 pilot, Pomidor303 was in an advantage position scoring hits in less than 2 turns, and then only some scissors and the low light of the dawn saved me.
Ah BTW the sound radar is still there, when reds canopies are open
Cheers!