Hate to write this, but it appears the slope of the roof is not steep enough. We are now grinding off the welds which the panels are screwed on, and fixing that. Instead of going under the eaves of the roof, we are going to raise the high side to just under the shingles of the existing roof. This will increase the slope by 20 centimeters.
http://teakdoor.com/Gallery/albums/u...icture_010.jpg http://teakdoor.com/Gallery/albums/u...icture_001.jpg
Here you see 2/3 of the roof add on. Hope this works.