Yup - and it's all in the tail. The one I built up for Reggie required a full pound of lead in the nose, even with the ECU battery + a 3000 mah 5-cell nicad right up in the nose, the fuel pump, solenoids, ecu all up right against the nose bulkhead, etc.

IMO it could have been much better balanced if they had used a reasonable amount of high quality resin for the layup, instead of using a cheaper resin and laying it up incredibly thickly to compensate.