Arrow spine should be fine with what you are shooting. FOC marginal but ok. Sounds like you just need a little tuning. Kyle and Joe should get you really close, but usually a guy needs to be able to do a little tweaking on his own too.
Also, you need to shoot broadheads and field points to verify. Quite often on sunny days you will see an optical illusion that looks like the back end of the arrow is doing small loops. Most often it is the lighter colored cock vane spinning. I fletch a couple arrows with all white or flo yellow fletching to help eliminate the illusion while tuning.