Hi,
I have a quadra 35 that a friend has been helping me to get running. It is old but seems ok. We put a new coil on it, seals front and back and a new ring. It runs but is ruff. It barely transitions and often dies. It idles ok. At the high end it gets 5500RPM at best with an 18-6 zinger. It seems to have more than usual vibration. We ran it today at the field. Any help would be great. The crank does not seem to be bent. The fly wheel may need balancing? I'm at a loss and my friend is too. He really has put in some time on it so I'd like to get it in the air ASAP. The engine came from an old Mallory Lazer.

Thanks

Joe