Chris,

No disrespect at all, my friend.

I do that because that's what fuel tank was in the airplane, and it was too much trouble for me to switch out the tank. I'm not sure if you're familiar with the PL airplanes, but they have two vertical formers on either side of the wing tube for the fuel tank(s). You cutout the shape of the tank slightly oversized, and put fuel tubing to line the hole, and it gives just a tight enough fit so the tank won't move. I suppose I could take the header tank out, but I've always flown one with the DZ's to ensure that I don't get bubbles in the fuel line. When I was flying a 1.60DZ in the airplane, it used up way more fuel than the 1.70 does, and truthfully, it's not hurting anything to leave them in there, so I just have. I could just underfill the tank, but I'd either have to put a different vent line in the airplane, or take the canopy off every time to fuel it. With that weight being located directly on the CG, I honestly can't feel it during the course of the flight, so I really haven't felt a need to do anything about it. If it ain't broke, don't fix it.

Most of the time anyway. [:'(]