I wouldnt go off what they say there, that is probably with the old CG measurement too.

my zdz80 single weighs in at 4.29lbs

Gt80 is 123oz. Anyone know what that is in lbs? gt80 is not a great choice for any 33% plane.

Anyway, with my 80, I initially put in 2lbs of lead in the nose to get it to balance about 1" behind the recommended point, flew it, took some weight out, flew it, now I am at 1lb of lead in the nose, and I am sure I can take it out now too and fly it fine.

This is with all servo's in stock positions. With a twin I might be wondering about being nose heavy rather than tail.
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