Hi Guy's,
I'll have to say that you've probably gone a bit too far out from the engine but nothing major that should cause any issues.
Generally there would be around 5mm between the face of the engine and the edge of the clutch body but this can vary depending on what the engine is.
Basically the the clutch fork should stand totally vertical when the clutch is in the cutter engaged mode and with the slightest clearance between the thrust pad and the clutch cone so no friction is created, thus keeping the thrust pad cool.
See how you go with that and see if you still have this scraping noise. Apart from that I'm a bit out of ideas.
Cheers,
BB