Anyone know why there are 4 grub screws in the top of a Holley Gen 3 Dominator metering block (billet) ? They seem to be something to do with the intermediate and hi speed bleeds. The reason I ask is when I was cleaning these out with carb cleaner and an air line, I noticed they were leaking. Can I just screw these in or snug them up ? Some were backed out more than others but I've set them all flush with the top of the block (as the majority were) snugged up they go 1/16" in. My worry is these were used for fine tuning the above circuits but then again whats the point if you already have removable jets for this
Confused TIA