First I want to say this is not happening to me, but it could happen to most of us. So say you had to take you newer tractor, or vehicle in to be worked on for something and you weren't sure what the cause of the problem was. Repair shop diagnoses the cause of the problem and install new part to fix it. Only that was not the cause for the problem. They diagnose again and think they have it figured out this time. More parts and labor. Still doesn't fix the problem. Finally on the third try they get it right and the problem is fixed. My wuestion is this who pays for the parts and labor on the first 2 tries ? I know most times electrical components are non returnable and can't be taken back out of the tractor or vehicle and returned to where they were purchased. Just something I was wondering about !