What AWSHUCKS said is about the best advice you can get on the scope situation. The hitting to the left could be also related to the vane problem. What was said above in two post about the nocks being off can cause it and also a large off set or helical in the vanes can also do that to thevanes. The string going under can cause it, but if that happened you would know it and be a tad bit more excited from all the effects this can cause! LOL!!