A-Line Manufacturing's soft foot is a condition in which one of the feet does not sit flat on the base. The foot or the base may have been warped. When you tighten the bolt on the foot, the machinery will distort.
How to check for Soft Foot
1. Move indicators to 12 o'clock position, depress indicators and then zero.
2. Loosen one base bolt. If indicator moves away form zero, place the amount of shims that will slide under that foot. Retighten bolt and make sure the dial indicator needle does not move.
3. Repeat this procedure for the remaining feet.