See the parts view here of the GG1. Look at the pilot truck assembly in the lower left corner. Notice the hook on top of the truck assembly. Order (1) spring #630-8064-049 and (2) washers #630-8302-P15 for EACH truck. You may have to ream out the washers as taylorra posts above. Put one washer over the hook, then the spring, and then the other washer. Reassemble the truck to the frame.
Larry