Just finishing a CMP Passion 3D and have a question about what CG everyone is using...

The manual says to use the range of 90mm - 110mm from the leading edge, which is roughly right on the wing spar... 110mm translates to about 4 3/8" from the LE... Mine is tail-heavy and balances at 6 3/8" from the LE dry...

I started adding weight to the firewall to try and get it to balance and stopped at 10oz... With 10oz of lead on the nose it still balances at 5 1/2" from the LE... The AUW of the airplane without weight is 5 lbs, 12oz... It seems pretty whacky to have to add another pound of ballast to get it to come close to the manual's recommendations...

Anybody have experience with this airframe and what it a reasonable CG without have to carry a boat anchor around for ballast???