i plan on buying some eastons off ebay when i get down to 2 arrows in my quiver....i have a few questions however... 1. what if an arrow is too long?? say i shot a 30 inch arrow and im suppose to shoot 29....how would that affect my shot?... 2. what if i got an arrow for 55 to 75 pounds and i only pull back 50...how would that affect me as well?? and 3 is there any 500 spines for 50 lb bows....i can only find 500 or 45/60 but not both....