Lunati 704

I have had valve train noise since install. Not on break in with the singles. At 2200rpm I get ticking .It sounds like the valves. Not a lifter tick. Many others with this cam have complained of the same issue with this cam. Car is quiet on start up. After warm up it starts. Runs fine. However the other day I put my foot in it and seemed like I lost power. It seems runs stronger with not full throttle. Motor was rebuilt 2 years ago. Did 800 mile easy break in. I am running comp cam lifters, factory rocker arms. The lunati lifters failed. Thats why I switched lifters. Tried adjustable rockers. No change. I dont race my car. Like to drive it and occasionally put my foot in it. 71 340, .30 over, Holley 750dp, 2800 stall, 3.91 gears, headers.