Nova Freedom pump question

Good morning

Finally, (2nd replacement) there is a working Nova Freedom in my hands.

The first two had pump jamming issues.

This one does not; and pumps smoothly,

After the initial oiling it took 8 pmps 100-1700psi ;and another 36 to 3000psi

Since then I've been oiling regularly when pumping through 166 rounds on 388 pumps

All seems ok except when I let the rifle rest after shooting/pumping.

The pump does not move air immediately for 9 strokes; so I oil it.

It then moves air properly

Is this normal, or is this an indication of a problem?

Thanks

Ed