Alright I'm ready to fly now, I just bought a pair of short needles for $5 each from Texas Timers and enough stuff to kit up a couple of bladders. I did some good reading on the clcombat.info website. They have lots of good information.
Too bad I don't have a fine thread spraybar on the Medallion, but It can wait. I'll revisit the zero pressure bladder for it. I'll lay a balloon in the first outboard rib bay on the Bean. Or maybe a latex un-lubed condom instead of a balloon. I can't possibly ask my beautiful pharmacist if they sell small ones.