I have the V4.1 morph++ pack and am trying hard to create a face morph from a photo. However, no matter how long I spend, I can't seem to use the dials to get the face structure I'm looking for. The face is a little more elongated and the jaw structure is a bit hard to replicate as well.

Can you give me any advice on face morphs for the jaw and face width/length overall or perhaps I need to look into something else like custom morphs/bones? What do most market place characters do for their custom characters? I want it to be able to be used by anyone with V4.1 and morph++ pack but I don't know much about doing custom faces or where to start. I'm NOT wanting to make a whole new head, just achieve the look I need from the picture.

Thanks for any help or hints on what to do or where to go to learn more about making faces.

if you have a modeling program which can import OBJ files without moving or scaling it in any way, you could export the head and drag the points around until you have what you want, then export it as OBJ, either as points or polygons.
that would be my advice, but I prefer to do it that way anyway, insted of using the prefab dials.
You might try Poser's magnets otherwise.. They're difficult to work with at first, but you get used to them.

Perhaps you should use another character than V4!
It is possible that another character already have the similar features
you´re tryin to acchieve with morphs.
I often do this, with great success.
It saves a lot of time...
/Cheers

Also, maybe magnets will help you get the basic structure, there are tutorials... maybe at PhilC's site you would find a good one.

You could try the free trial version of Face Shop Pro sold at RMP, Daz and other places.