Picked up a 2020 3561 last week and found two large and two small nobs. I think they didn't find them when they did their walk through and put two in.
Great ides of putting a large washer and pad on it because it is close to letting them open.
I had to ask the forum what the small nob was for, too block open all the doors in storage so they don't close and air gets in them.
2020 Montana 3561 Legacy (Because of the Forum), everything except paint
2018 Silverado 3500 DRW, 50Gal Transfer Flow, Andersen hitch.