My motor was running great a couple of weeks ago. The next time I went to take it out it wouldn't start. I took it to my local dealer and they went through it and couldn't find anything wrong and it started right up for them. Took it out the next day and no problems. Next weekend it wouldn't start again. Tried a new neutral swithand still wouldnt start. Got a spark tester today and I get nothing. Any suggestions as to where to go from here?