I have a 97" motor with 10:1 compressor. When first going to start the bike in morning or sitting for a couple days. It would turn over slow or the starter drive would make a horrible noise. I replace the starter clutch drive with a heavy-duty one. After that replacing the clutch gear ring. As for the battery it's brand with plenty cranking amps. Now when the bike is cold or sitting for a few days. When go to start it. It turn over like slow sometimes spits back through the carburetor. I put a voltage meter on it. What I did discover at times when he goes to start it drops below 9.6. Only when it's cold. Once the bike is running when you shut it off it's tied up with no problems. Has anyone else has this problem???? Could I need a high-torque starter???