In these pics are 2 collector tanks I bought. The one on the left is from COV, it works perfect. The one on the right is from a private sale. The tank on the right is approx 1/8" taller than the tank on the left. The tank on the rights interior threads where the draw cap screws on do not come up flush to the top tank so the draw cap cannot be screwed on. My question is, is the right collector tank from an earlier ggts version or is it defective? I was hoping someone could answer this for me. Thanks



