Problem with "Coil"

Hey guys, I am having trouble really knowing how to coil in the backswing.  I don't know if its my spine tilt or setup but my shoulder turn always feels restricted and the plane looks waaayyy too flat, and the only way I can get into position is to lift my arms.  This leads to my downswing being all arms and no power.  I just can't get the feeling of proper coil, everything just feels weak and Im only 25 years old and cannot see why my shoulder turn feels so restricted and flat.  Does this have to deal with setup?  Because I bend from the hips, I dont contract the abs (do I have to do this??)  and I feel like I'm in proper form.  Just can't figure it out, please help

i know what you mean and for me it tends to be from having too much weight towards the front of my feet, if someone gave me a light shove from behind i would have fallen forward. The fix for me was just having my weight more towards the middle of my feet, but still an athletic position. The new weight distribution also resulted in a less hunched over position and a more upright spine angle.

Thanks for the reply Lebowski!  So do you keep your toes up in the setup or what?  Because when I turn I feel the weight move towards my toes and thats where I think I go really flat in the backswing

Attach your arms to your body and swing the body...practice with a tee under each arm.

at first it will feel like you are swinging in a straight jacket but stick with it.

arms and hands cannot be trusted.  The legs and torso however can be trusted for good ball striking