RETRAXPRO MX - Close Up Look At Fit, Features and Is It Waterproof. Installed on 2023 Tundra

New RETRAXPRO MX tonneau cover installed on my 2023 Tundra 1794 with 5.5ft bed.
Bought the RETRAXPRO for durability. Appreciate their lifetime warranty. Was also super curious is the hidden tailgate release (in rear taillight) works with tonneau cover closed.
Was also curious just how much water gets in when washing the truck - I crawl under the cover immediately after washing to see where water comes in at.