Been having a few issues stabilising my 800 grain Easton FMJ's that I'm using for asianic water buffalo. I'm currently running four 2" blazers which are stabilising fine and I'm happy with the speed, but I cannot avoid a little bit of fletching contact on my QAD ultra rest. I've tried using 4" vanes and they eliminate the contact issue, however I lose an unacceptable amount of speed, which is so great that it is compromising my accuracy (arrows drop away more than twelve inches from my existing forty yard sighting :/ )

Any ideas and help would be much appreciated!