In my mind I think you are correct. There is not a lot of difference between the 2 pipes in the middle of a 2 pass rad. If it was a normal single pass then you should pull coolant from the bottom like all the rads have done for years.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .