>he can play major sevenths without sounding cheezy

yeah, that's what I'm talking about...

Jeez, at least someone acknowledged they can sound cheezy!

It's my guitar that doesn't like them. You see, I rescued the guitar and cleaned it up, brought it back to life after it was abandoned and somewhat abused for many years. It's previous owner played the chord exclusively...

BTW, I love the guitar. It's a Thompson from 1991. Nice and small and articulate and warm and well built!