Tom, I have never flown an aircraft where flap retract and single engine climb speed have been the same, hand on heart I have not flown the 601 so that's where my confusion must of come from.
I am out of time, really sorry, maybe we can continue later, I don't know why this is getting me so involved as since I left the airlines I have turned into a proper cowboy with regard to stuff like this!
Have a good weekend.