i have it, and now and again will get it out for people. The one i own, is the one Christian sold 20+years ago.( if you recall it came with a spare blade, so you could do knife thu coat.. but ive never used it)
Only recently, i managed to get a copy of the helney instructions.
If you need those, i might just be able to help you out.If i kept teh email with them on that is!