I just built some Heavy/ high FOC arrows for my never been shot Toelke recurve. Shot 2 bare shafts and 2 4x4 feathers. Results: all are hitting low left,6" low and 4" left groups at 10yds. The bare shafts are sticking w/ nock hi rt. The arrows are really close according to Stu Miller's calc. Where to start?? Not sure about recommended brace ht, set at 7.5".