Better Shading...

Hi Guys,

im working on something new...
But i cant really figure out how to make the shading better on the HighPoly Shape.
Its all about this Handgrip here:


I think that everything looks fine from the Side:


But this "intrudes" really suck because they dont loop till the end:


And thats the point. I cant figure out how to have nice HighPoly Reflections in the middle of the Handgrip.

Here the Wireframe:

Also when i connect the nGon to a Triangle, the Shading is also bad.
I would like to fix this, can somebody help out with that?

I tried it already with Turbosmooth with and without the use of Smoothing Groups.

Here is the Link:
http://www.file-upload.net/download-10948913/Handgrip.FBX.html

So if somebody can fix the Shading in the middle, i would be very thankful.
But i would like to learn from it so please tell me how you have made it!

Thanks,
Gazu

Edit: The only thing i think i could do would be to start with a lot more geometry.
But im not sure....