absolutely everything I can to avoid these questionable scenarios that come up. Yet somethings you just have to trust to people with the right tools and knowledge, and hope they did it right. This is one of those times.
I did talk to him and explained that I run an underdrive pulley and the crank needed to be dead on. He assured me he would get it right and my machinist that did the valve work on my heads praised the guy. I trust my machinist and he's had several cranks balanced by him with no problems. Even when I picked up my heads I mentioned this exact point and he reassured me of the quality of his work.