Nose gear doors are open after landing

[Bhump]

Im hoping someone has some ideas about a gear doors issue. 1965 337, gear operating as it should. Reservoir topped off, but after landing and shutdown my nose doors are open. I don't seem to have any leaks or air in the system. I can turn the master on and pump the gear up. Its a mystery!

[hharney]

So let me understand, the doors do not close when the gear is extended? Or are they opening slowly after some time sitting? Do they close when the gear is retracted?
Sounds like it could be the actuator Bill, it is probably leaking back into the system internally and releasing doors unless the doors don't close when the gear handle is selected.