I have a hustler super z, that does not want to turn over. Has new battery, power at starter(12.6V) when key is on the same for other post and small wire on starter. Had problem last year with it starting and replaced solinid on starter( froze up,dirty) and had to jump it to start more toward end of season because weak battery. now it does nothing. please some good advice here would be great. tried everything I can think of already at this point.