For the past 6 weeks or so, I have been using Topspin Cyberflash in the main strings and Technifibre NRG2 in the crosses. Recently I have noticed I am suffering from a little bit of elbow pain and shoulder pain. Do you think switching the Cyberflash to the crosses and putting the NRG2 in the mains might make a big difference? I don't want to get rid of the poly altogether, because I like the control and access to spin that it gives. Any suggestions?