Of course, I adjusted my grip as I went, but thanks for that obvious suggestion, but it's not comfortable. As you naturally grab the weapon, you want the webbing of your thumb to index finger to fit snugly under the beaver tail. It's just the natural grip, and you want that.
The factors that make the bite may not have to do with where I'm gripping, it may have to do with the combination of the angle of the gun at the peak of recoil, plus how loosley I may be holding it, allowing the hammer to grab the webbing and pulling it into that sharp edge. Since this is a .45, the recoil is increased over the others here who have the 9mm version and have had no issues with bite.
I would much rather slightly alter the weapon to minimize the bite than to change my natural grip, as I don't have any problems with my other weapons. Since this will be my primary carry weapon, it needs to be as natural as possible without worrying about gripping it differently to avoid this.