hello everyone,
well i have a black horse models speed air 40 plane ARF that has a 10.5 in wing cord. the recommended CG is 100mm from the leading edge

well thats just shy of 4 inches thats almost half the wing cord and i know thats not right, when i do the math 25 to 30% of the wing cord is 3 inches to 3.25 inches.

the kit is made overseas and i am unsure if the translation was right. any ideas on where i should start to balance this plane now that i have a new engine in it ?

thanks in advance for the help

bassman