Just a tip on the loose vents:
Got my new 18.5 WSM several weeks ago and 2 of my bottom vents were loose so I used some of my metal working background to fix.
Take 2 ball peen hammers (use only the round ball end on the female side) hold one on the inside rivet of the loose vent and firmly tap the other side of the rivet until the vent is snug!
Only tap one time and check and so on.....
Got my new 18.5 WSM several weeks ago and 2 of my bottom vents were loose so I used some of my metal working background to fix.
Take 2 ball peen hammers (use only the round ball end on the female side) hold one on the inside rivet of the loose vent and firmly tap the other side of the rivet until the vent is snug!
Only tap one time and check and so on.....