Originally Posted by
Edgar Perez
Ok. So CG should be as per the manual, but measuring with tanks filled with landing fuel.
Forgot to mention I added two 40 ounces tanks. I set them up to empty first and keep them empty for the CG measurement. They are close to the CG, so don't think they are a factor here.
Thanks

The balance is not critical, for sure it could go back a little more than manual even on the SU-30.
With the SU-27 it’s normal to have the batteries back from the nose.