I am flying the GP Super Stearman with a rear carb DLE 30, Jtec pitts muffler and pre drilled spinner from Valley View. I did not add any other weight and it balanced right on the suggested mark. I am using two A123 battery packs, one for flight controls and the other for the ignition with one of the batteries positioned over the receiver and the other battery positioned forward and under the fuel tank. I use a dual silicon diode voltage dropping circuit (two 1N4007 diodes soldered in series) for the ignition system to keep at or below about 5 v. Maiden about a week and a half ago and now have about a dozen flights. Very nice engine and plane combination.

Also, you can buy an complete replacement Rcexl ignition for your Zenoah 26 from a number of vendors, most of which you will find in the 'buy & sell' forum of RCU.

Howard