I'm no swing guru, but I struggle with a block or a block/fade.

For me, leaving it out to the right is a combination of 2 factors:

Hip slide
Ball placement

When I'm brainless (as I should be), I tend to slide my hips in my swing (I haven't been to the range to ingrain not sliding). This moves the bottom of my swing arc forward. This leads to a shoulder dip to make ball-first contact - but since I'm still coming from the inside, the face is open relative to target (but square to the swing path), and the ball goes right. I get the same phenomenon when I have the ball too far back in my stance, and make a 'normal' swing - the ball is contacted before my swing bottoms out (while coming from the inside, and the clubhead is doing the same thing), and I lose it right.

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True Length Technology Fitter - www.truelengthtechnology.com
It's live! - www.ShipShapeClubs.com
PCS Class 'A' Clubfitter

A new highlight: Golfing the home course on Christmas Day.

I say it too often: If it's golf club shaped, you can play with it.

For the record, I'm a club doctor, not a swing doctor.