To convert the text into a RKT file, copy and paste it all into Notepad/Wordpad/another text editor, and save it as a .ENG file (e.g. AEJ415W.eng). Make sure you save as "All Files" in the file type box so Notepad doesn't add a .txt extension to the file.
I'm planning on buying a set of 54mm casings next month. I get two weeks off from training next summer. If I can go to a launch, I want to fly my Extreme Performer on a big motor. Maybe i'l try to shred it on the J800T