The wing and tail are aligned and I was careful when I put it together measuring it several times.. The inverted flight takes just a touch of down for inverted level flight..The plane tucks slightly on the down line to the canopy..I hope to fix this with a throttle/elev.. mix.. I`m adding about a .040" washer under each dowel..I have some .020 shims I made out of an old cowl that I have not tried yet..Looking at the trim charts it seems like I should be able to pull the plane vertical and it go straight without any rudder input...without the shims it starts working it way left..I had to do the same thing on my 47" version Osiris as well...thanks for your input..