Hi all! I’ve got a 2022 superstar 4059 and the drains at 4 corners of the roof are clogged. There is a plastic grate at the top but there seems to be something else beneath that(a fine scree or something) that is preventing the water from my roof from draining down the 4 corners of the coach. Has anyone else had this issue and what had to be done to clean the drains?