I used to shoot a Browning Summit2 then stepped up to a SwitchbackXT. Let me tell you that I would not take anything for it! It does sound like a grip issue with your drenalin.

You should be consistent every time you shoot. If you're not, the POI will be off. It's not the bow.

With that said, I LOVE my XT...but I also miss my Outback. They're all great bows.