M102404, thanks for the encouragement. I may go that route if the following doesn't work. I'd like to try not taping if I can.
Coach, thanks for the links. Are you talking about a fitting like MTC male straight on this age/image?
http://hosesupply.ca/pnfittings.html
ImageUploadedByTapatalk1339644101.320578.jpg
I think the PX4 threading is M5 .80, so I'll try the M5/6mm MTC. I'll bring in my mag to the store to try it out. Hopefully they will be ok with that.
Then I can hook the 6mm up to the Palmer setup, right?