Hello, I have a small problem...

I currently own a HP 68/4000 Crossfire Nitro tank. Acourding to my 2005 angel speed, I need a LP tank to run the gun. I was told that I can run a HP tank on a 05 speed if I mod my mini reg? I read the service/tip threads and it does talk about this issue but not in great detail...Can anyone shed any light?

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