On the machine that was a needle breaker/not timed correctly i watched this video and fixed the timing my self. Lol of course since it was the machine i had found abandoned on the road i figured it wouldnt hurt it or my pocket book if i tried to do it my self. Hahaha luckily a few hours of work and oiling yielded me an awesome machine.
Http://www.youtube.com/watch?v=fzhR6PNlI4E
Its not too hard and he explains it really simply.