The spring determines the tension on the body panels. I adjust the tension by
bending the spring to either tighten or loosen the grip of the fastener. The tension
varies since some panels over lap which doubles the thickness resulting in a
different tension than a single panel. Bend both sides of the spring evenly above
the rivet.

[IMG][/IMG]

I adjust the spring before welding the plates on, and use a small tab to simulate the
over lapping panel. It's easy to bend the plate so I do it in the vise, and make small
adjustments on the car.

[IMG][/IMG]

Rich