I just got an '09 Firecat not long ago. Had everything set up perfectly, then I recently changed the draw length and weight. Changed to 1/2 inch longer draw (28 inches), added about 5 pounds to the draw weight, now at 70#. It's maxed on draw weight. Everything seems to be shooting well, getting good tears through paper out to 30 yards. Cams are hitting as close to perfect as I can possibly tell. The tiller is a good 1/4 inch off, with the upper part of the string being the farthest away. Wondering if this is normal? Also shooting field points perfectly, but getting a good deal of fishtail (actually a circular rotation of the fletch end) with broadheads. Shooting a Victory V1 Nano Force arrow at 28 inches. 100 grain Shuttle T locks, Quickspin vanes. I know the arrow is spined right, broadheads are straight with the shafts, so kind of at a loss as to the rotation. Anyone got any ideas?