Do you offer a guarantee on the string jobs when you string with babolat vs gut?
In other words if the person comes back to you a week later with broken strings do you ever offer a restring for free?
I would offer
no guarantee at all especially with nat.gut.
One time many many years back I had a customer that I strung with nat. gut bring a racquet back after 1 week string broke, I restrung it for free, and later found out from another person that this person picked up a stone and hit the racquet with it to pop the strings.After that came back to me I immediately increased my fees across the boards for all strings.Stringers should prepare for issues as such, as I cannot understand why some here only charge $10.00 /labor, as I charged that over 40 years ago.That was when gas was approx. 28 cents /gal,and prices have gone up a great deal on just about everything since then.
Now at present time, I give a lecture to all new gut customers about guts issues and early breakage is their problem not mine, or they can go elsewhere.
And anyone who supplies their own string be it gut or synthetic there is not only no guarantee for longevity, but no guarantee even if it breaks on machine as I have no idea how the string was stored or cared for, where I know my stock is fresh, and kept in good environment.You need to tell them this before you receive the racquet.This is just common sense.
Even some of the players I hit with keep their racquets in trunk of car which is not good for gut or synthetics at any time of year.
Anyone who guarantees a string job is not clearly thinking. The only thing I offer is on a new customer with a synthetic string only is if they do not know exact tension desired I would make best guess on infor obtained from them and tell them if they preferred a higher or lower tension I would redo it for free for 1 time only. No one has yet to take me up on that.