Welcome to the Cart Tek Service Support Center. Under certain conditions it may be necessary to install a new data cable, or R&R the data cable back through the frame. Should the lower hinge mount on your GRX1200 handle fail, you will need to follow the process shown in the following video. You will need a very small flat blade screwdriver or pointed awl to use in this process. If you have further questions, do not hesitate to contact us. 541-633-4308