Sunroof frame covers difference

[Eugene wilson 0]

Hell all,back again.i fitted my sunroof frame after refurbishing it and changed the rotten screw type fittings for the later rivet fittings,where the rails connect at the front the rails arn,t flush with the roof due to the rivets touching the plastic in the top,I've heard there's a difference in the covers if so are the riveted covers slightly taller,inside,thanks for any  knowledge on this .