I am building a senior from a kit...made the bolt on wings almost like yours...but when I tried to install the motor right side up it stuck up way to high (OS 70S)...I inverted it and lowered it 1/4"...do u think that will be a problem? I may make it a tail dragger also...I cut strip ailerons from the 5th rib out and took most of the dihedral out...maybe has 2 1/2 to 3 inches now