I have a kitchen which i am DIY installing which is L shaped, the corner is a walk in larder so the doors are at a angle. I have end panels to fit either side of this, which will be at right angles to the adjoining units, the doors are 22.5mm thick, so have these sticking out proud by 22.5mm to keep these flush with the adjoining doors Is this correct? when you have a corner unit on a angle to set the end panels at the same thickness of the doors?