I have the dle30 with the TBM pitts, I have one 2800 lipo for the ignition with its own regulator/switch(esky) and another 2800 with regulator/switch for the receiver and servos located either side of the fuel tank. With this set up I still have a 10 x 30 nut and bolt with 6 1inch washers to ballance correctly. Extra weight not a problem with this airframe. Flies fantastic! Mine has been flying for a year now with only 1 hard landing accident (when the bolt and washers broke free in a virtical manouver.......my ballance weight ended up in the tail ! The bucking bronco ride back to the runway took years off my life, I landed tail first followed by a hard touch down on the mains which pushed the gear mounts up an inch or so ,easily repaired overnight flying again the next morning) Great airframe and engine.

chris.