See that little tilt on the rocker fairly often. Usually doesn't hurt a thing. You can get adjustable pushrod guide plates to correct it. As long as the roller tip is on the valve stem good...usually not a problem.
Top of the gasket does look good. That gasket looks thicker/stronger than what comes with those carbs and intakes. Feel under the gasket with your finger, on the 4bbl end, and you can tell where there's lack of clamp area because of the spreadbore.
Here's a link to the plate Edelbrock says to use when putting their square bore carb on a their spread bore Performer intake.
https://www.summitracing.com/parts/edl-2732?rrec=true
Clay