I messed around with some others like fOvershoulderAddX and fOvershoulderAddZ but they didn't seem to do anything. In Skyrim the fOvershoulderPos... and fOvershoulderCombatPos... lines work on a typical X, Y, Z axis. There's some kind of issue with the game's new wording, the "fOvershoulderPos" and "fOvershoulderCombatPos" lines rotate instead of slide, and fOvershoulderCombatAdd only seems to function with Y. Not sure what the new lines are or if they even exist. This may just be something that has to get modded. I've bit the bullet and have just been playing in 1st person (Thought I hate it), and cherishing the conversations when I get to see myself. I'm sure it has something to do with the game's new use of the camera, I notice that in Power Armor (not sure if it's the same out of power armor) that Deathclaws will grapple with you and makes the 1st person camera tilt and such (not sure with 3rd person when it happens, was too busy not getting killed to check). It could also be something to do with the conversation camera angles, repositioning the camera while talking. I'd imagine there's a line for it like "fOvershoulderIdlePos" or some such, but since all the Bethesda games have been pretty uniform it's something a BSA extractor will need to locate I'd guess.