I have a Jackson with a Floyd Rose on it and it's a b**ch to drop tune it. I ordered a Tremsetter by Hipshot, it says it eliminates this problem. Got it for 30 bucks off EBAY but I haven't recieved it yet. On a sidenote, when you detune your E string use your fine tuning knob on the trem. You'll have to screw it most of the way in when you originally tune your guitar to a standard tuning then when you are ready to detune you just back that fine tuning knob out and whalla, drop d. That way you don't have to mess around with the nut. I'll let you know how the tremsetter works when I get it in da mail and put it in. Also, there is a thing called the Tremconverter, you can get it at Stew Mac. It allows you to lock the trem in place with the turn of a little knob. That would allow you to detune to whatever you like. It's about twice as much as the Tremsetter.