Hydeaway needs a little down elevator mix to the low throttle.

You are not going to adjust the wings to get it not pull. That's just the way it is....I flew my Hydeaway a ton spent much time trimming it.....It is a very good flying model but it needs that mix

It takes about 4% mix on elevator to low throttle and it will fly great.....

Pitch mix is a little up elevator mix...and a little roll mix....for the knife edges

I moved my wing location to reduce the pitch and roll mixing so I don't know if you built it per plans or not ...I did not so I can't tell you how much it needs for the knife edge mixing...

I do know that Of all the ones I have seen, and flown which is several of them they all needed the dn elevator on low throttle mix....Many guys did not use it but they all needed it.

Troy