That's my point. If it's a vacuum issue, why not just deal with it in the flow rate table.
I too have a mad hatrid for the number 1.8 as I hit it all of the time during decel. On one hand, I want to learn why it's bottoming out there and figure out how to fix it the right way. On the other though, I just want the problem gone and am two steps away from the trial and error mentality.