No worries. One minor adjustment to a string can make a world of difference. A lot of shops take that approach and honestly working in a few shops around sothern california, there are techs that only know that much and some that don't "believe in" tuning your bow. They adjust the rest/nock point and get you on your way. If you end up putting a new string on the bow you may want to check out winners choice, They are expensive but they have a lifetime warranty. If there is any issue with the string they will send you out a new one. Great company to deal with. I don't work there nor am I paid to say that.