I just had a Micro trol lifter wipe out a lobe for me . Bought a vodoo cam and lifter kit 3yrs ago. The lifters that came in the kit bled down. So , I put in the Micro trol . Not as bad but still bled down when sitting , sometimes for only 10 min . Has worked good when running for 2,1/2 years ,then today came a little noise from valve gear . One rocker was loose (adjustable) So , off with the rockershaft and out with the lifter and , yes , a bowl in the lifter and damaged lobe . Really need to get the best now . Good thread .