Experience with hydraulic rollers lifters

No. Don't recognize the name on there. I used the Hughes/Morel 5321's in my freshly built 340". Chaotic at first. Over half wouldn't pump up on my engine builder's SimTest machine even with it making 65-70 pounds of oil pressure. I was about to switch to solid roller cam and lifters but got some help from a dealer I cannot name on here. He took them apart, shimmed them and turned them into limited travel hydraulic lifters. Problem solved.
Hope these work out for you.