Step 10: tada!
now that that's all taken care of, put the rack in! If all went well, It should work. If not.... have fun tweaking it until it does :-P
The rack doesn't come out completely, but more than enough. If you wanted it to come out further, you could get a set of full extension sliders that roll on ball bearings and such, but I opted not to since they cost more than twice as much.