Does anyone know if you must 'pop the top' to remove the Riding Plate? I have two Sparks with IBR and one of them needs a flush kit installed. I can't seem to figure out how to install the flush kit without removing the Riding Plate. I've seen other posts on the forum saying that it can be done in as little as 15 minutes but I just can't see how that's possible with IBR and the Riding Plate installed.