hydraulic lifters

Hello, I have been working on getting my car up and running but keep running into a lot of little things here and there.

I have a 74 duster with a 360. It has an edelbrock performer rpm camshaft that came with hydraulic lifters.

The problem is that I keep getting excessive noise from the (what i think) the valve area.

When I did the valve adjustment I noticed that about 3 lifters where not giving me resistance when adding the preload. I could almost bottom out the adjustment screw and still spin the pushrod freely. So I set them to a similar setting to all the others.

Now with the noise coming from when the engine is running I think that maybe bad. What do you'll think?