OK, I am not familiar with your data source. Perhaps you could give us a link? A quick Google got me nowhere useful Except Outdoor Voices.
When you say "Strange string entries" what exactly do you mean? The TCP Read will return a string that is essentially an array of U8 values. What exactly is returned? Have you tried changing the string display format? What are you expecting? And, of course, it always helps us help you if you attach your code!
"Should be" isn't "Is" -Jay