I'm replacing broken parking brake cables on my 95 GMC K1500. I got the cables installed fine but now I can't get the metal lever piece that connects to the shoe back on the cable ends. I somehow need to compress the spring at the cable end and hold it back while I slide the lever hook between the spring and solid cable end. I'm starting with the driver side and there is no adjustment to give me any more slack. Any ideas or tool to compress and hold off the little spring? I can almost get it by hand but I'm not strong enough and don't have a third hand. Thanks.