shimming hydraulic roller lifters solid

Well on the EDM SFT lifter the snap ring holds the cup in place and the EDM hole is constantly bleeding oil so no pump up happening there. If your using the AMC style pushrod oiling you also have another oil bleed.
Yes, but is the enough NOT to pump up? I don't know. Also, we're leaving out of this discussion completely oil to the roller. It's been made a huge deal out of that a street roller has to have oil to the roller. So, why don't factory rollers have pressurized oil? Why is splash oil good enough for them and not a solid roller on the street? Are we bein bullshitted?