ule warp body question

[RedBeard]

Hey all,
So for christmas my girlfriend decided to go out and get me a ule warp body to match my new warpfeed. Anyway, I was just looking at airgun.com and noticed it said that the warp body required a slight modification to the rail. I was wondering, is it simply cutting a biece of the rail out so the warp body will fit properly? Also, does anyone make a modified rail for this purpose? I've looked around and haven't seen anything in particular.
Thanks for the help.

[trains are bad]

You have to cut or grind a notch out of the rail. You can do it with a dremel, or you can send it to a lot of people on this site who will mill it for you for a price. Rougefactor does not stock them but I know he will sell you a new rail already notched.