Kev, do you still have the original batttery cables, if yes, replace them with copper cables. The original aluminium cables have too much resistance in them causing all sorts of wierd trouble. one day my starter just clicked. think i tried 15 times before it turned over slowly, but got it running to get it home. put a charger on it and it would not start at all the next day. thought the battry was dead so took it to the store since it was still under warranty, but they would not take it since their tester said it was fine, then i heard about the cables going bad. no problems since.