No need to completely remove the air bleed on top, just a half or so turn will allow the bleed to function as designed without completely removing it. Similar in concept to a brake bleed, which is loosened, but not removed, to bleed brake calipers.
Well done video. Curious if any one has created or built or can buy a door on inside fender plastic liner? Meaning without taking the entire wheel inside fender piece? As is with mud flaps there is more bolts and screws to remove the entire inside plastic piece If a little type door could be cut in the existing liner with attachments of push in type fasteners Maybe would be easier?
Only thing for improvement is never get a rubber oring with diesel, the oring can swell and you'll pinch it and break it when installing. Crisco or silicone grease works great