Question about Edelbrock RPM Airgap - thermostat housing leak

Any chance the hose itself is leaking down onto the housing?
Looks like a Magnum Air Gap manifold and housing. I don't see too many of those leaking but the Chinese made hose clamps often let a little coolant slip by right under the worm gear screw.
Also, looks like you have crankshaft sensor bolts holding the housing. Maybe see if those are too long and bottoming out.