Hard start throughout day fine first time in Morning

In the morning the truck starts right up. Every start after that takes twenty seconds of cranking until it finally coughs to a start, and smells very rich. Takes a few seconds to smooth out after start but I am not giving it any fuel, just letting it idle and settle down. Does not matter if the truck sat ten minutes or two hours.

Fuel pressure test:
AM: key on 55.
AM: engine running 58.
ran to operating temperature, shut off
pressure drops 5 lbs in thirty seconds.
pressure dropped total 20 lbs in five minutes.
pressure dropped total 35 lbs in ten minutes.
key back to on pressure shoots up to 55.