I had my concrete tiled roof replaced in 2018. The roofer put in a dry verge and a dry valley trough system as I requested a low maintenance roof. I clean my gutters regularly, at least twice a year because of all the trees surrounding my property. But, over the years I've noticed debris starting to gather between the tiles and dry verge system as well as at the sides of the dry valley. I am concerned this debris will drop down and block the drip system that these dry verges have. I can already see a lot of debris at the sides of the dry valley. Should I be worried?