IMM Engines 408 build

I have been chasing some noisy lifters in my magnum. It's a .030 over stock stroke. Using Hughes EQ heads, springs, and cam. Nothing wild, springs are matched to the cam according to Hughes. I've tried different oils and filters and it makes noise on starting after sitting for a day or two. I replaced a couple weak lifters and made no difference. Ended up replacing them all and it's slightly better. I used Melling lifters and have great oil flow to the lifter bores. It's pretty noisy and somewhat embarrassing.