I was having issues with the original so I imported into Sketchup and cleaned up the model. Printing much better now!
Thanks for the sweet file mate, printing for a reddit rematch gift ;)
19JAN15- added a second .stl file with enlarged "A" holes as they do not appear on this scale when printed.
21JAN15-added a new .stl file with enlarged keyring hole. removed old .stl files for simplicity.
pics (of both) soon