Comp roller lifters

[1Y]

I have a brand new set of Comp Roller Lifters 850-16 and have six that won't pump. I'm to assume since these are considered stock replacement style that Comp isn't making them. I called them today and a warranty exchange is in the works and fairly painless. Anyone else have any issues with these lifters? Nothing like pulling fresh motors apart....

[CTX-SLPR]

I had one stick on my V6. Even after putting them in an ultrasonicator to clean them out with acetone I couldn't get it free. Since I got them second hand I couldn't do the warranty and bought another pair.