Thanks for that set of comparison numbers! We often here of the discrepancies, but don't often get exact numbers.

The results are actually better than what we often hear about. The prescription isn't nearly as bad as some. And, actually, the CC value should be considered equivalent as well. On the other hand, the CYA and FC errors are pretty serious.

I'll go this far: get a gallon of muriatic acid, read the muriatic acid handling guide linked in my blue signature box, and then go ahead and add it, but only 1/4 gallon at a time -- and test the pH 4 hours or so after the addition. Adjust your pH down to 7.2 - 7.4. With a TA = 160, it's going to tend to drift upward. You don't want it wandering way up there, while you are trying to get rid of algae.

By the way, transporting a sample can cause values to change, especially if it gets hot OR if there's any air space in the bottle.