Hi. I have T1760 and for past two years I've been having an issue when starting it. It clicks everytime but doesn't crank. It will start every 6-9 time. Sometimes I would drain the battery and after charging it and with battery charger set to start it would start right away. Two years ago I was told it's a solenoid, so I replaced it. On the weekend I removed starter and had it tested. Was told it was broken so I replaced it but the tractor is doing same think. What can I check/test to see what else can it be?