1215 days 1944 hours. I spent the whole time trying to get the last rib and the channel ribs on right. The first picture shows the channel rib sticking up too high. It fit the template perfectly. Well after sanding to make things fit right I made the bottom rib too short and had to cut another one out. Now things look right, but they do not fit the template perfectly. I am just lucky that I didn't accidently have two left channels. I was on top of things enough to make sure I got the unglassed portion on the outside. I am also quite unclear how that last piece fits. That curved channel rib on a flat piece. I don't know.