Yep agreed, totally counter-productive making the nut slots deeper. As Wokks said, take it off the bottom. Just make sure to score some straight lines on the bottom of the nut to ensure you're taking it off evenly, and keep checking your height in the slot so as not to take too much off.
Edit: provided those stock plastic nuts not a radiused bottom of course, I can't remember off hand and can't be arsed going out to the shed to look. Someone might be able to answer that one.
Last edited by bargeloobs; 27-01-2015 at 05:53 PM.