Recommend fabricated valve covers

I needed them with no breather holes or baffles so I could place them on the opposite ends between the rockers. do to high lift and e-vac system. So I bought these. They are junk. The gasket flange is the same thickness as the cover and they bend when tightened. So if it doesn't state the thickness of the flange or show a pic of it stay away. I had aluminum flanges laser cut and now and have to weld them on. The best way to tell is they should be welded all the way around the flange. Ont mine the straight part of the flange is just bent in a break and just the ends are welded. Just some friendly advice Steve