are you suggesting I should sand that latch a bit?
. If it shifts suddenly I think catastrophic damage is a possibility, but I could be wrong on that.
that will cause the mb not to properly attached to the case, I'm not sure that it is a wise idea with a standing case, gpu and hsfFirst thing I would do is loosen all case standoff screws to see if you can gain some fraction of a millimeter moving the board, reducing amount of material you need to take off the latch.
Would remounting the fan on the other side help?
unfortunately no, all other case fans are 120mm^ I assumed it was a case, top exhaust fan... tho' I suppose along the same line of thinking, the fan could be mounted on top of the case instead of inside.
the cost of replacing a fan is negligible, the cost of replacing the psu however....I doubt it would cause any damage, just crash, including potential data loss/corruption, except that if the wire/connector flops into the fan, could damage it or the fan.
this is my case: https://www.tweaktown.com/reviews/3180/antec_two_hundred_mid_tower_chassis/index.html^ I don't know what your case is like, but with most case standoffs, and most motherboards, the holes for the screws are a bit larger than the diameter of the screws so there is some wiggle room, and it attaches fine. As stated you only gain a fraction of a millimeter but every bit helps... unless this is not a case fan, you didn't directly address that with clarity.
I one need to remove a small bit, if it breaks, it is like I've cut it altogether which it plan BKeep in mind that if you remove too much latch material, it may eventually break off anyway. I've had connector latches break with no material removal, just from getting brittle with age.