I am preparing to take the ABRSM violin test, grade 5. One of the pieces, Allegro (4th mvmt Sonata in E, HWV 373) by Händel (A:2), has a chord (measure 22, F♯, a♯, e) where my violin inevitably squeaks unless my timing is perfect or I don't have enough rosin. (My bow is in the lower quarter when reaching the e-string and the pressure is applied after it kind of ‘hooks’ onto the string). I have noticed that when my bow has more rosin, it is much more difficult to get the perfect chord; however, I can't play in the exam without enough rosin because otherwise everything else will sound terrible. Because I haven't changed strings in over a year, my question is this: could this issue be caused by my string being old. FYI, I am using an evah pirazzi pirastro set. Also, I have to perform in 3 days, so is it worth switching strings now, if this is part of the problem? If the problem has nothing to do with the strings, can anyone please give me pointers for my technique?
Thanks for your help!