Installed last night. Middle section came out pretty quick about 20 minutes, left side took 35 minutes and right side about 5 minutes. Total about an hour using the top down method. What helped me the most was sliding down and pushing in on the sections then using the stubbly flat head screw driver on the tabs that didnt initially pop.
Used an old sock as advised earlier in the thread but only after I had finished the middle and left
added a pic of price paid for rite of passage.
I feel like it could be done in a about a 1/2 hour if I had to do it again