Need opinions on the cg of this plane:

Acording to the manual it seems nose heavy but the flyght sensation is tail heavy with some belly pitch in KE.

It has a really nice axial displacement, the flying characteristics are really good and IMAC performance is unbelivable.

I did try to center the chaft line near the wing axis but could only lowered 6mm due to the cowling, could this be the reason for the pitching in ke. I also tried putting 1.5 oz in the tail but it has a tendency of gathering altitude at inverted flyight, as I have it now without the 1.5 oz it flies leveled at inverted.

I also moved the tank beneath the wing tube, in the canister tunel thinking how the weight of the fuel afected the pitch in ke but had no possitive result.

I would apreciate any ideas because I am impressed with the performance of this plane and its construction, would love to correct this tendency without mixes.