Comp cam lifter problems.......what lifters?

well i found johnson lifters supplies the country with lifters , hyd flat tappets are junk to say the least . i installed a dozen sets in a 340 build i change lifters time after time . with no one bore having the issues . the lifters just would not be quite , finely i received some seal power ones from summit through the cam grinder . there still make noise on start up from an over night sit . but i've been assured that they will bread in and stay pumped up . it has adjustable rockers and a small cam . no reasoning , just junk parts .