Yes, it fixed the issue. I didn't make it out to the track last year and maybe a good thing as last time i spoke with Best machine, they said not to make a full pass, because these lifters require bushed lifter bores and it may suck the pan dry and kick a rod out. My 400 block is not bushed. I did run it hard down the freeway a few times last year without issue, but not like a full qrt pass. Thinking i may have to use these in the BMP Hemi block and get something else for my 511 stock block.