Jim i forgot to mention the parts that i am cutting are diamond shaped exhaust
ports. these are cut counter clock wise starting at the botom of diamond shape moving to right no bevel then bevel from right to top then no bevel from top to left then bevel again for cut to bottom finish.In other words 2 sides of diamond are perfect ie 1st and 3rd and 2nd and 4th bevelled.
Hope this makes sense.
I will re nest these parts in sheet cam so the cuts are vertical and horizontal [almost] to see what outcome is.