Hello have an old d7e with electric start that sometimes dosent want to turn over. Had times in the past it wouldnt turn over but would just click. Sometimes if you held the switch over to start after a bit it would crank over and start. Figured it must have been a bad starter so replaced the starter and solenoid. It seemed to work for a time but now back to not starting over half the time. The other day wasted half hour trying to get it going but no luck. Any ideas? like the old machine but not much use when it wont start.