Gotcha. I didn't realize that your CYA reading was from dilution. The fact that they got an FC reading of 5+ shows that your kit is better than whatever they are testing with. 5+ on a test kit that only goes to 5 means that it could be 5 or any number higher than that.

When you post your numbers tomorrow, post FC and CC in addition to pH and TA. No need to run the CYA test again.