Hope you have good luck with this roll top.
I put one on my S10 years ago and the problem I found was pine needles / wet leaves, etc would get into the inside and clog the drain holes about every 2 years I had to take everything apart because so much crap had gotten in there that it would not open or close easy.
Now don't get me wrong. Loved it up until I sold my truck (12 years) to buy the ridgeline, just not sure if I would do one again.
Good luck
BobVal