This is interesting, because there was no AI weight mod available when I experienced the refusal to take off in the R.E.8 squadron. I was unable to find the old thread in the CA forum (it seems the forum search doesn't remember my posts for more than a year), but I'll keep looking.
I think I didn't have the problem in every mission I flew, just every now and then. Still, it was annoying enough to force me to switch squadrons.
Elephant, please keep flying in RNAS 8 and let us know if the problem comes back.
When I have time, I'll try flying in the same squadron. I don't have the AI weight mod, so we'll see what happens.
"Upon my word I´ve had as much excitement on a car as in the air, especially since the R.F.C. have had women drivers."
James McCudden, Five Years in the Royal Flying Corps