Rex how did you do this move? On the Infusion there isn't an easy way to move the jib up. The halyard S hook, hooks onto a ring which is connected via eyelet and then swaged to the forestay. Maybe if you bypass the factory ring?

Can you post pics of your jib setup?

In the stock setup the tack will be 4-5 inches from the bottom of the front chainplate (where the plate sticks out)