great advice ramblinrev, that makes sense about the feed dogs not pulling the fabric through, and causing a clump. thicker/tougher material needs tighter top tension. (makes me think of tater tots) thanx JerryW.
I fully appreciate the advice, and am always amazed by the HF community and how easy and fun it is to get answers from friends that I never met. thanks everyone..
If anyone knows any other good sewing tricks, Im all ears.