Freaya interaction, help please

[Ivan]

I flew my new to me Freya today, finally at the field and got a chance to ring it out. I am getting some sever interaction much like a phasing problem, but different.

The elevator and aileron functions are interacting. There is a severe down tendency when using left cyclic, and a slight, not nearly as bad, up when using right.

Aft cyclic has a pronounced right cyclic interaction while forward doesn't have near the interaction, but it does have some left.

I have messed with the phasing block, which doesn't make much difference. eventually I just went back to being square, which I double checked and checked again.

I also checked that there are no mixes causing it in the transmitter, and watched the servos as I moved each stick, being very careful not to move one against the other. Everything is like it should be.

Any ideas?

Thanks
Ivan