Hydraulic Roller Lifters w/LA Block?

I had an issue with the lifters on my 360 LA and comp cam. Mine was a little different as on my block the bottom of the lifter came up past the oiling hole in the lifter bore. Comps first answer was to send me another set of lifters. Didnt make any difference. Then I sent cam back to have the base circle reground. They didnt go far enough. Then on the 3rd try they ground me a new cam from billet stock but still wasnt quite far enough. At this point I was very frustrated and called Mike at MRL. He assured me his lifter had a smaller roller and would reduce the total height the lifter moved up. He was correct and my problem went away. My cam had a .575 on both intake and exhaust. My lifters were solid rollers so I dont know about hydraulics but I can tell you Mike will understand your problem and will offer great advice. A super guy to talk with and very very knowledgeable about our engines!
Best of luck
Rod