Install Garage Door Gasket and Threshold

I cover the multi-part installation of a new rubber gasket for the bottom of my garage door, and the installation of a new floor threshold gasket. I also provide some information on the difficulties I encountered,

Door bottom – extruded aluminum channel:

https://ddmgaragedoors.com/parts/part/BRA-200000TG.html

Door bottom – rubber gasket:

https://www.homedepot.com/p/Frost-King-E-O-2-3-4-in-x-18-ft-Vinyl-Replacement-Weather-Seal-for-2-Car-Garage-Doors-RV18/100658222

Door threshold:

https://www.homedepot.com/p/G-Floor-16-ft-Length-Midnight-Black-Door-Threshold-Trim-GFTHRESH16MB/203451252