this deal will be no good for me, as the shipping would kill me!
but just out curiosity, how do you modify the makita rail?
There's a small rib on the rail that prevents the Makita saw from tipping with beveled. You can cut a small section if the rib off at each end by grinding or even routing. You only need to cut this rib to make the parallel guides to work, other than the rib the Makita rails are identical to the Festool rails.