Chances are a bad spark plug or wire. Make sure the wire end isnt rusted at the coil or plug. Check you wires with an ohm meter. Usually 1 ohm per foot is the rule of thumb.

I am having the similair problem as the Original post. But I KNOW it isn't motor related. The motor has less than 15k on it and just chenged all of the ignition components. Also checked the timing and compression. Tip Top. As well as all new tires, brakes, tie rods, ball joints, and had an alignment done. Still wobbling at 45-55 and I noticed that it vibrates when the suspension compresses. :confused:

It sounds like you are not exposing right, are you checking your meter to make sure you are properly exposed... maybe you need a light meter to tell what to set your camera on.

If you put your camera on shutter priority, it will automatically compensate by having your lens open wider (aperture). If you are doing it manually, then you have to adjust your lens opening wider (smaller number like from 8 to 5.6 or wider). However, you will lose your depth of field (background will get blurry). You can use your camera's flash to stop fast action, also.