the real layout is symmetrical (the eastern side looks right to me) and the western side looks wrong.

There are traffic signals at the junctions between Wythenshawe Road and the on/off-ramps for both the north and southbound carriageways of Princess Parkway. Current layout looks as if there is a connection only for the southbound carriageway.

sorry i have no idea how to make the changes I only joined up today to try point this out