Jeff,
Sorry you are having difficulties. It sounds as if you have not adjusted the tension correctly in the D4 clamp or the clamp has a problem. I can Skype with you and provide some technical assistance if you are willing. Please email me,
[email protected] to set up a time for the Skype call.
Also, I'm posting a step by step set of photos with instructions for adjusting tension on the Flip-Lock clamps, for the benefit of others who may need some help with the process.
Step 1) Open the Quick Release clamp by pulling the small silver safety button toward the tip of the lever and swing the lever out.
Step 2) Using your finger nail, catch and move the exposed silver ‘worm gear’ on the inside of the lever, toward the end of the lever.
Step 3) Swing lever to the fully open position.
Step 4) With one hand, grip the quick release jaws and pinch the quick release clamp "jaws" closed.
Step 5) With the other hand, while keeping the jaws closed, move the tension adjustment wheel in small increments. Moving the wheel toward the right, (or up as shown) loosens the clamp tension. Moving down or to the left tightens the tension. Make small changes and keep testing until the clamp holds your equipment tightly.
*RRS components are 2mm wider. Other brands may vary as well.