I don't have enough clearance on the 20x60 v slot for the router/spindle mount. Should I Dremel off the ends of the screws? It looks like even if I do that, I'm flirting with the lock nuts.
You will also need to either shim behind the mount or do a bit of grinding on the backside of it. the nuts are 5mm deep and the space between the mount and the bearings is only 4.5mm.
It could be parallax, but it looks like in the picture they can leave a thread or two and clear the mount without altering the nut or mount. Maybe a side view will tell a different story.