Got my engine today and looks fine. Has a little inclusion in the casting of the cyl right in the transfer port so I hope it doesn't go all the way through the casting. Just awaiting the arrival of the 80" Katana to put it on. I am using a TBM 7.4V 2cell LiOn pack for the ignition on my DA with a 4.8V regulator. Just what I had laying around. I thiink a 1500 mah 4.8 NiMh pack would be fine and I have used them before on other gasser ignitions I have had. Just that the LiOn makes it easy for me to remember what batt. type I have in the airplane. Just plug three leads of my Powerflite LiOn charger into the three charge switches on the plane and let it go.