I was under the impression that the Neo came with a 17 inch front rim
and a 16 inch rear rim. Are you swapping rims to F model rims?
You are going to find that the 18 inch front rim will give you slightly less
ground clearance under the frame which could become a scraping
problem when you lean thru turns, unless you have already installed
Progressive Suspensions forksprings for increased ride height and
reduced diving when the front brakes are applied.