Helium Method, I Need Advice

So, I’m getting ready to go using the helium hood method. Everything I know about how this should be done comes from an instructional video I saw of the device being made.

Now I’ve been reading more about this method here and on other forums, but stories relating to failed suicides have got me worried. So I was hoping I could get a little advice from you guys.

It seems like the main problem people encounter is the instinctive removal of the hood after falling unconscious. From a passage I’ve read in the Final Exit addendum, this is likely caused by too much oxygen leaking into the hood which prevents the brain from entering anoxia. And once the helium feed shuts off, the person ends up subconsciously removing the hood.

Whew. This is getting a little long. Are you still there? Bear with me a little longer please…

Well anyway, after following the video instructions, this is my setup:

I’ve built my own exit bag using instructions from the nurse Betty video. Two disposable helium tanks feed into the exit bag using sections of tubing connected by a junction. I’ve secured the places where the tubes attach with masking tape in order to reduce leaking. Is this alright so far?

Now, I was thinking of restraining my hands but that would make turning the valves rather awkward. Should I not restrain my hands and simply trust the system to work as described?

I can always purchase more material in case of failure, but I’d really like for this to work the first time.

Any other suggestions or advice? Please don’t be shy.