Jay Honeck wrote:


a) Stay the same over time
b) Get worse little by little
c) Let loose all at once

Is it oil or grease? Some people overgrease the
Hartzell props during maintenance and it slings a bit.
The older Hartzell diaphram props will also leak a bit
before the diaphram goes worse.

As for prop shops, I have had good luck with Sensenich
in Lancaster (they will also work on Hartzells) and
H&H propeller I believe is the other shop. I'd stay
away from the Hartzell factory shop in Piqua at all costs.