Bought Next Percents in my regular size and they seem really snug around the middle of the foot. Are they supposed to be like that? The middle sole of the shoe is really narrow like it's going to bust at the seams. All the other nike shoes I've run in aren't like these including the racing flats, Almost want to exchange them for a 1/2 size up but I'm not sure if that's going to solve the narrow footbed issue.