Can i put the engine rotors from an fc in a gsl-se? i remember reading that there was some difference.

 

simple answer: yes.

last i checked, the concession was newer rotors-to-older housings was okay, but older rotors-to-newer housings was questionable. with that said, i've seen a handful of the latter combinations that ran great and i haven't seen any reports of issues (but then again, i wasn't diligently looking for any).

use the FC rotors as long as you're using the entire assembly or you're getting them balanced to the older counterweights.