When you rack the slide slowly possible it would not go full battery, cuz the firing pin catch the sears and it helps to slow down the slide into battery(hence specially if you have hard firing pin spring). So you don't need to rack it slowly.
I used PD hollowpoint for my major 9mm, schuemann AET 24 twist with popper holes with max michell comps using autocomp 1.165 OAL with 6.8 grn CCI 500 primers, PF 172-174.
I suggest filing 1/4 of the ejector's top half ( top right corner) at a 20 degree angle and 3/4 of its bottom half (bottom right corner) at a 60 degree angle. However, your measurements may differ from mine since they vary depending on how long your ejector is.