I have a 1981 wagon that was real hard to start in the winter too. I don't know if you want to do what I did, but this could get you by until warm weather finally gets here again. Nothing worse than having to wrench on a car in the winter.
What I did was disconect the wiring from the cold start injector, and hooked the injector to 12 volts, through a switch inside the car so I could turn on the injector and hold it on while I cranked the engine. It's a temporary fix, but I could get the car started without any excessive cranking. I'd leave the injector on until the engine smoothed out enough to stay running. It worked for me.