Forest Grump

Hi all. Any suggestions would be much appreciated. My pride and joy IMMACULATE xt has suddenly developed a big water leak from the roof? I have no sunroof so I can only assume the factory roof bars???? I’ve never had a drop of water in previously and now have water marks on both sides of the vehicle and water running out from by the sun glasses holder. I’ve covered it over for now is there any drain hoses I need to check or is this something more serious? Thanks all