I think what I'm getting from your post is that the empeg won't go far enough into the sled to make good contact because your dash trim is in the way. Is this correct? If so, a good solution to this problem is found in this thread. I had a similar problem in my car and after seeing this thread, I gave it a try and it did the trick. A good photo to show this is here.

If this isn't your problem, then just ignore me . Sorry, its been a long week.