I would leave them alone,both fletched and bare are grouping together.I would leave them at that length and try them again at 20 yds. when you get a chance to shoot at a longer distance.11 yds is a good start but I would try them at 20 yds. before I would do any cutting.I don't go by charts very much for traditonal bows,they might put you in the ballpark to start with.If you want 26" arrows you might have to try a lighter spine maybe 1816 or 1913 or 1916.But I would wait until you can shoot at a longer range before cutting them.