The outer wing tube (socket) in the fuselage is very weak and badly glued together with the fuselage
Try to stick it to the fuselage and strengthen it in thickening the layers of the tube
maybe fiber glass layers

Maybe the inner surface of the nose ring is not parallel to the outer surface of the nose ring
Which will require you to make a spacer part for the right nose angle of the motor
not in all of the kits

the outer surface of the nose ring is o.k for reference the down & side thrust

Chester