Mounting a dual snorkle Mopar scoop

Can you screw every fastener in there?

If they are just slightly loose use some loctite on the threads.
Or look for fasteners not made in China, the thread pitch is really bad, try fastenall and tell them you need USA made fasteners. $$$ but may be worth the trouble.

If the threads are really jacked, you can fill with JB and re-drill, the key to not cracking the JB by step drilling until you achieve the correct size for tapping.