You ever buy something that you think should work, that for some reason just doesn't? I mean, "on paper" it looks good, not a manufacturing error, or just plain junky but it should work.
I bought one of those two wheeled, wheelbarrows, and man, it just doesn't work. It should, but it doesn't. It took me awhile to figure out why, but I have, and it's just that it is never balanced like a single wheel wheelbarrow. I constantly have to readjust the leverage/balance point.
it should work, but it just doesn't, which is too bad.