I haven't been to mexico, but, tell the people on the US-side of the US-Mexico border that mexicans are hard working and responsible, when they're happily busy doing nothing but sapping up US tax dollars living on state benefits all because they hopped over the border and popped out a kid making them instant citizens (though that latter bit is more to do with dumb US laws)... :\
And as for British engineering, I agree, it was utterly useless when it came to the nationalised corporations (if the name starts with "British", like British Leyland, British Gas, British Rail, British Steel, British Coal, British Petroleum, it was nationalised), that's why we no longer even have Rover because they were so badly built and the unions demanded more money than they deserved for their shoddy work, and now they don't have jobs, thanks to the god ol' unions....
And I'm not saying anything about hating Sanitaires, I love 'em, I just need something that doesn't melt it's own belts after a few uses... :\
I still believe the basic and very simple engineering principle in this thread is being missed though, when you run a Hoover belt for even 30 seconds, it warms up and slackens to the same tension as a brand new, unused, fresh out of the packet Eureka RD belt, so if the belt was "too tight" then the Eureka RD belt should never ever be used becasue it too is too tight!!! It maintains that tension for several months, no hot belt smells, no stopped brushroll when going from carpet to rug, no squeal on powerup, just reliable cleaning performance, and like I say, if my motor breaks through destroyed bearings, I'll let you know, but I have a feeling that won't be for about 10 years... 
