Hey all. I keep having this crop up on my 54 3100. Step on starter and it cranks slow, almost like battery is low. Sometimes the first time I start it and sometimes after I've driven it, stopped somewhere and gotten back in to leave. The other day stopped for gas, went to leave and tried several times to start. Thought I'd killed the battery. Called a buddy to come jump the truck and while waiting tried it one more time. Spun over with lots of power and fired right up. 6v system with 8v battery. I'm gonna clean all the connections and was wondering if there's anything else I should check.