Leaky sunroof

leakyroof1

My wife has had a 2007 Santa Fe and a 2013 Santa Fe Sport, each with a sunroof. Thus far there have been about 5 times when the drain to the roof stops up and rain overflows and gets the seat and driver's carpet totally soaked. There should be some type of filter to keep leaves and other matter from stopping up the drain that must be too small so that it is not a continual problem. We cars mildew and mold and it is a very annoying problem. Surely Hyundai can engineer a solution.