First use pliers to compress the lower portion of the ZG2, then insert into the holes of SGL and TAGL. Since glock bars mounted on the ZG2 will sit slightly higher than bars mounted on the original SGL and TAGL pins, we recommend moving the original pins around on the resonator frame to fill the spaces on the lowest pitches. Then use pairs of ZG2 on the highest pitches as needed. Using a pair of ZG2 pins for each bar, rather than one old and one new pin, will ensure the bar sits level. And placing the ZG2 pins at the high end of the instrument will give a more uniform look to the installation.