Thanks Martin.......but I didn't mean to browbeat you into revealing info before you were ready. It's just new tubing arriving this week, new compression fittings too.....and my old D-Tek V1 is looking for a new home now...in the wife's computer. Add to that the price of the GTZ was reasonable at $59 and I just had to buy. But the pressure drop doesn't look that drastic after all.

I do appreciate the info! Hope my DDC2 is up to the task!