I created a ribbing texture in Photoshop for the P4 Turtelneck sweater.  I saved as a bump map added som additional textures etc.  But when I render:

1. The shadows created now on the turtleneck seem harsh and don't blend - I know it's the image map becuase when i remove it the render looks better
2. The ribbing looks like I want it
3. I've tried making the area of the bump where there is no ribbing black, gray, and white solids in an effort not to affect that area of the turtleneck during render but no matter what it does!

First, any ideas on what I can do to make this bump work better? resolution?  Second, the P4 turtlleneck sweater is the only one I've found so far for a Poser figure.  It may be that the mesh on this is just not that great.  Any suggestions for another resource for a turtleneck sweater? I'll need to know the map so I can adjust the colors.

Thanks everyone for all of your help. 

Windows 10 - Poser Pro 2012 - 64Bit - 24GB RAM - 4 x 3.40 GHZ processor