I haven't seen any way to adjust it. If you're having problems getting it closed, you could add a washer or two to move the assembly away from the lid, which would allow easier latching. The only drawback would be the lid seals wouldn't be as snug.
That's an interesting question... I find it odd in that my right lid opened up on it's own on my 2020 RM this past Saturday. Never had that happen before and I hadn't been in that bag in quite awhile. I also thought it interesting that when I bought the bike they expressly showed me that the lid latching requires two clicks (pushes) to latch securely. Didn't have to do that on the 16 RM and never had that one open up in mid ride. Granted that the road I was on was quite bumpy at times (I85 through VA). I think that I'll ask the dealer about that this coming Saturday.