Recently, i went to try out Wilson Reaction 16 on the crosses, with Alu Rough 16L on the mains. It produces a pong sound, which is slightly different when i used multifilaments on the crosses. I know its a solid core syn gut, is this the reason for the sound? Also, it seems to have quite bad vibrations down the arm. Anyone used it before? Give me some comments on the Reaction 16. Thank you.