Here's the scenario: You bought a new racquet that came strung with in this case BG65 at I think 21lbs by an okay stringer, but not as good as you're used to. Being BG 65 the tension has dropped a couple of lbs. You've always disliked BG 65 as a string since it loses tension fast, has bugger all feel, and little power, even if it lasts you forever. You usually have your strings a couple of lbs tighter. You have a fair few spare strings that you do like (BG66 in my case). You have to pay for stringing You don't use your new shiny racquet because (you think) the strings mean that the racquet is underpowered and lacks feel and you think that you're repaired older racquet plays much better. Would you cut an immaculate set of strings? Seems like a waste, however it's also a waste to have a new racquet which you aren't using because of the strings. PS please substitute any combination of strings to suit your circumstance.