Each string had different characteristic, so i do agree to test it yourself, feel it, & decide yourself should you restring it or not.
From my experience,
I own 3 racket : Lining MP UC5000, TK770, AVP.
Mainly i use TK770. Lining are my lazy flex racket, & AVP (not my liking) just for trolling around playing with my beginner friend.
Last time when my friend borrow my Lining, it snap & i string it with LN66EX 26lbs. Initially it feel good, repulsive string & all. After around 6 month its in my bag, i take it out again for lazy play. It feel so lousy. Soft, mussy, less repulsive, & i just feel like to cut it myself.
Then my AVP use BG66UM 26lbs. At that time i dislike string on Lining, my AVP string are 1 year old. I switch to AVP & i can still enjoy the dead feel of BG66UM than LN66EX.