Almost all the cams and lifters I sell go straight to the customer, so I never see them....... hence, “I” don’t test them.

On the rare occasion it’s something I put together myself, and the even rarer occasion that I’m putting something together with hyd lifters........ I actually don’t follow the manufacturers instructions.
I pump oil into the lifters through the oil feed hole in the side, and then check to see that they are pumped up hard before installing them into the motor.
I just let the valve springs bleed them back down.

I can’t even remember what the last hyd cammed motor I put together myself was.
I bet it’s been over 10 years.

I hardly do any assembly work anymore.
The last bit of that I did was last year....... where I actually took out a hyd cam and replaced it with a SFT.