[bando]

Thanks Blackdog_kt, will give it a go. I'll setup a mission within the FMB to make sure the wind is the culprit.

EDIT:

Made my own mission without wind and tried to take off in the Blennheim.
First of all; rudder is trimmed all the way to the right when entering the Blennheim. Don't know why, but you have to correct it. Second: Tail wheel lock does not work.
Started her engines and after a minute or so stopped the carb heat for both. Had pitch halfway travel (60% or so) as well as mixture (50%) and let the engines run warm. There is a significant difference between Stbd and port engines in oil pressure. Again I don't know why. After some 10 - 15 minutes (made some coffee) I figured those engines where warmed up sufficiently and I pushed up some throttle slowly. Kept the brakes on till I saw some RPM indicator rise.
This mission had no wind and the aircrafts rudder was trimmed neutral, resulting in no right drift anymore!! Was able to slowly rev up, let go of the brakes and made a slow run for take off. Engines were doing some 2200 rpm, pitch at some 60% travel and flaps down, I finally got her up. Raised gear, climbed some and retracted flaps. I couldn't believe it, but there I was flying over southern England at 1900 on a summers evening. Awesome!!

It's a tricky plane for sure. Tried a couple of times after this success and mostly blew up engines again. Well, at least I got her to fly once.

Hope it helps someone fine tuning the take off techniques for this beautiful aircraft.