the three blades were the first to develop problems and where recalled by the manufacturer. everyone is so focused on the big cut......there are at least ten other heads with same or bigger cut and also a 2 balde with 2" cut is a 2" slice a 3 blade with 1.5" cut is actually cutting more tissue (more cutting surface). over the top heads work and use almost no energy(1-1.5"cut) but when you starting swinging open huge cutting blades and try pushing them through deer what do you expect.