RE: CMP Katana 140 V2 CG
No problem with the questions. No extra lead anywhere. Mine has 3 metal gear servos in the tail, SPE40 on the front (approx. 52ozs.), 1100mAh A123 ignition battery inside the fuel tank compartment, and 2300mAh A123 rx battery between the fuel tank and wing tube supports. 13.5 lbs. with super beefy landing gear, and no fuel. No change in thrust angle, just used the fire wall as is. Yes, trim sheet added to make it more visable. It's really blends in with the sky on top, the white bottom is ok.
As you can see, your DLE 30 is about 18-20 ozs. less than the SPE 40 I'm using, so you may end up needing to add extra lead up front, or moving the tail servos as suggested by Opjose. If you haven't tried it yet, move your batteries to the sides of the motor box and see if that helps get more weight up front. Let us know how it works out for you. I hope to get mine back in the air later this week if the winds get slow down under 20mph[>:]. This is my first gasser, and I'm really impressed with the ease of starting, no oil slime all over to clean up, and the stability of this airplane in the air (low rates). It spins as fast as my delta wing on high rates. You will love it! DG