Re: Dust exractor
Removing the piece should be fine, looks like a gutter of sorts to stop as much junk from reaching the rail etc. That said, I'd likely just make a custom narrower dust boot out of wood or polycarb. I've always hated that you can't see anything with ones like that. You could easily redo it to make it more oblong than square and you'd probably get better removal too. Alternatively, you cut it down (removing the top curve back) etc.
G
In case anyone is wondering, I'm the twin of the other gfacer on cnczone...