Intake Manifold Gasket Coolant Leak - Sienna 2001

Hi, Recently opened the Lower Intake Manifold for Knock sensors. Noticed that Intake Manifold gaskets were broken. Now, I bought after market Felpro gasket and put it back with the Intake Manifold, now coolant starts leaking from the water passage inlet of the gasket (confirmed). Please advise how can I better seal the water passage section to avoid any coolant leak. Image attached