I just recently replaced the gutters on the entire property and also installed a mesh over them to keep debris out of the gutters. However, I noticed that it was still overflowing during a recent thunderstorm. Upon closer inspection, it appears that some tree debris from the roof is running through the roof troughs and collecting in the gutter corners (mitres) thereby impeding the flow of water.
Is there an effective way to prevent this run-in from the roof on to the gutter, stopping short of just cutting off the trees on the property?
I have included pictures with the problem areas highlighted. Again, these gutters are less than 3 weeks old and are 6 inches wide.