My bow arm seems to get tired a lot faster than my other arm. I'm set at 52lbs and it really doesnt seem to tire me much but my right shoulder (im lefty) gets tired a lot sooner from holding up the bows weight. Is this normal? I always thought the draw arm would tire faster. I want to raise the weight a few pounds since I know my left arm can take it but I'm not sure if that will cause my right arm to tire even more quickly.