Snap-on's network of franchisees sell the premier line of auto-repair tool kits to mechanics all over America. But the market is pretty much saturated, and Snap-on is in denial. Since 2011, the company has committed that particularly American sin: binging on credit. Snap-on has been encouraging its franchisees to sell more and more using high-priced loans from the company's own Snap-on Credit division. Tim Murray thinks a lot of franchisees are mad as hell and aren't going to take this anymore. That will erode sales for this century-old American institution.