Hey bud,
I know this is annoying with a high ticket item but rest easy. This won't affect performance at all unless you get it off to one side enough to lose the gasket seal. Mine does the same however not so much with high heat for a long duration. If I lift the hood and push to one side during closure it will cheat to whatever side i cheated towards. You can eliminate this if you wanted to by bending the hinge tabs closer together. I didn't find it worth all that. I loosened the two 4mm torx hinge bolts slightly, gave it a little love shove to the left and then tightened them back up. It can still shift left/right a bit if I don't close it with intent dead on center but it doesn't bother me unless the gasket looses seal, then you get inefficient burn and smoke soot all over your stainless. Also may want to check your level (Entire Grill Level) as if it's sitting high on the left side or right side as it heats up good ol gravity will lead it to cheat to one side of the other.
Let me know if you try the hinge bolt adjustment and how it turns out!
Happy Smoking