You'll either want to move your nock point up or lower your arrow rest. But not both at the same time. You'll want to make a small adjustment and then shoot a couple groups to find out where the arrows are hitting. What you want to see is that gap between field points and broadheads start to shrink as you make your adjustments. Once everything is well tuned you should be able to alternate broadhead or field point and stack them in the same group.