RE: FunAero S.E.5a build
Yes, spread or centerline distance was what I was looking for. 22% of span. If I'm following you on the relocation of landing gear,
1) Currently the axle is 1-1.5" forward of C.G.; (about the distance axle to outer edge of rim) ;
2) How much did you move the landing forward?
3) Did you change the mounting locations of the landing gear or just change the lengths and angles of the gear?