well, I got them in the mail last week and shot a few. then I shot the blazers. after warming up, I shot a blazer then a fob, and repeat. they shoot just fine out of my set up. I didn't have to change anything.
With that being said, I will not be shooting the fob's from here on out. They shoot exactly 3.5" lower than my blazers. I'm pretty sure I don't have to explain what that means. I'm not afraid to try something new as long as it improves what I'm already doing, in this case it didn't.
thanks for the info guys