Great info everyone. Too bad I didn't come here before I just tested, hehe
I did cut off the ends of the old hose so I wasn't clamping old hose -- great suggestion there.
Turns out the leak is coming from the new secondary regulator, on the input nipple. Looks like Micromatic didn't put enough teflon tape or something.. who knows. Not the end of the world, going to grab some tape tomorrow, triple check all my clamps, leak test again, and have a cold pint
I appreciate everyone's help... great forums
-Seth