I agree with these guys- I have 145ish sitbones and need 155-160 in my saddle width.

There's new data out on Bontrager's site and in Medicine & Science in Sports & Exercise that shows we don't actually sit on our sitbones on the saddle as much as is lore. But I still think the whole pelvis width needs support and from where you say you are raw- it's either to narrow or too much curve right to left.

Discussion of the bontrager info here: http://forums.teamestrogen.com/showthread.php?t=25618