The reason i don't like the MK setup is, if you bump your elevator halves you can actually
knock them out of alignment. I know they are held together with a bolt but i found if you grab
either end of the bell crank you can actually twist it slightly and it will hold this new position.
Chris,
I had a similar experience. I found by extending the rear of the push rod and putting a bearing on it, the elevators tracked as well as the MK bellcrank. And it is easier to install and a lot cheaper.
Allan