Thanks for all the comments guys. This gives me some things to look for, for sure. I'll look into the linkage to see if throttles are opening all the way, and I'll check that timing. I also realize one engine that is not performing right, will cause both motors to show a lower rpm as the one drags the other one down a bit.
Paul, if you decide to drill out the counterweight, I would be very interested in knowing if it makes any difference in the way your motor runs. Please post an update if you do this.
Jay
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