This mower is 12 years old. After ?? 6 or 7 years it became hard to start. Click, Click, click and then it would catch and start. Cold or warm engine made no difference. I cleaned all of the connections and grounds no change. Three or four years ago I took it in and spent $1200 on it for that and several other things and it was better when I got it back but still did it. Now it is back as bad as it ever was. I do NOT want a new mower I want this one to crank like it did when new.. Perfectly good mower otherwise. Any suggestions?