To avoid the rods scratching the table, I added some feet :-). I know some have reprapped them, but I haven't quite got it adjusted yet.
I went down to Wilko's and picked up a pack of 4 rubber feet and a pack of carpet coasters. The rubber feet worked pretty well the wrong way up, the holes for the screws were a bit larger than the rods. I wrapped the ends of the feet in insulation tape and the feet wedged on nicely.
I then superglued the feet into the carpet coasters, making some nice large rounded feet.
Worked pretty well!