Looking for sample Solid Lathe tool for internal necking

hello, does anyone have a Solid lathe tool for internal necking ( like an internal oring groove) that they would share?

I have tried every combination of x/y/z orientation that I can think of , but the tool still creates a very weird cutter path.

The "canned" PTC internal turn/groove tool works okay, but  for path verification I want the full visualation that a solid tools offers.

thanks