I'm with you (barely) on the "worn out" socket, since it no longer provides the "satisfaction" that Sears "guarantees", but to expect them to replace a wrench because someone ground the open end out to a larger size is BS. Someone else modified that wrench, then you bought it at the flea market but didn't notice it was modified. Sorry dude, but you're stuck with it- NO WAY should Sears be obligated to replace it.
Sure, some people will argue that if you take it back to Sears enough times, one of them WILL replace it for you- but I think it's wrong of you to expect them to do so.
The way I recall it, the Craftsman hand tool warranty basically says that they will replace any tool that does not provide complete satisfaction to the customer. What that means to me is one thing, as it obviously means alot of different things to different people.
One day Sears will have no choice but to either:
a.- modifiy or eliminate the hand tool warranty
or
b.- make the tools so cheap that they aren't worth purchasing in the first place
Flame away, I'm a big boy- I can take it.....