interesting.... I have (I think) a 15 and a 19... both 3 blades... I can't wait to get some run time on her... maybe this spring
I just bought a new ignition switch for mine yesterday.
http://www.ebay.com/itm/320968962161...84.m1439.l2649
Here is another one you might consider.
http://www.ebay.com/itm/TRACKER-WOOD...&forceRpt=true