Hypertherm Xpr 170 plasma cutting issues

I have a couple of issues with my table cut quality wise, I am cutting 3/16 SS at 40A N2/N2, the straights look beautiful but for some reason when it cuts the curve of some lifting lugs it leaves a little slag on top of plate almost like it isn’t piercing all the way. The rest of the part looks good just the top.

Also if anyone has the same machine as me what amps and feed rates do y’all use for your material. I’m trying to get best quality on cutting and sometimes what pronest suggests doesn’t cut well.