no prob, and you're welcome =)

yeah... centering the swash is done with the servo rods... if you can take a pic I can tell you if yours is good or if you will have to redo it.

Did you by chance break the motors in... probably not the problem... but it would help.

Does the motor seem to spin freely with the main gear? I didn't quite get what you were saying

someone else had a simular problem, but they replaced their 4 in 1 and it fixed it... but you said you already did that...

Check all of the wires and make sure there are no bare spots anywhere....

Do you have a multi-meter? If so measure your batteries after a full charge, and after your 2 min flight.

this sounds like it will be complicated to figure out, but probably a really easy fix problem.

You could also try lubing your main bearings