When you get the starter back and installed, try to check the resistance with an ohm meter between the starter case and the negative battery terminal. You said that you had a grounding problem earlier. If the grounds are not in top shape the starter will turn slower under load. I actually changed the negative cable on my LGT. I made it longer so that I could ground the battery right at the engine.
Either chains, wheel weights or filling the tires with liquid ballast will be easier on the rear axle seals than trying to go with dual wheels.
Either chains, wheel weights or filling the tires with liquid ballast will be easier on the rear axle seals than trying to go with dual wheels.