Impeller and wear plate was just replaced on engine.

Water sprays enough from the small "retaining screw cam" that I could tell from looking at diagrams. It is a single flathead screw near the raw water intake hose clamp area.

Water dibbles out of even with engine off and seacock open.

Engine running, raw water starts to spray and drip faster. Enough to accumulate about a gallon of raw water in the bilge directly under pump/pulley area. After 1 hour run in the bilge under engine (not enough to flow through the next limber hole into the overall bile area). No temp issue or water pump alarm. Water does spray on other parts, pulleys etc. while engine is running at higher rpms, so of course this unwanted.

Any ideas from best case to worst case scenario before checking into this?

I attached pics of similar water pump (not exactly like mine) but that #6 retaining cam screw is universal on a lot of the raw water pump diagrams i could find, and that is where the leak is.

Thanks !