No. I believe Jerry was asking about the first head strike, "just after 2:00."
I always strike to the temple using the last 6 inches or so of the jo. But really temple, behind the ear, jaw line should all have a powerful effect and are close enough to not change the form much.
When I learned this we did both awase (uchi and uke move together) and start-stop, where each partner remains in place until the other has completed his movement, which allows you to be more precise about your targeting.
Was this your only question about the 1st kumi jo? That was very specific!