70 Duster Starter Relay Voltages

Just wondering, have you tried to turn the motor over by hand with a socket and breaker bar? Is the starter flopping around on the bolts before you lock them down? maybe bendix is getting jammed if the starter is not lined up right. Also have you measured the voltage at the starter?
I have not tried to turn the motor over by hand. The starter was not flopping around on the bolts when I removed it. I don't think anything is seized up. It didn't feel jammed when I removed it and has never previously made any unusual noises when starting.
The voltage on the starter when the ignition key is on is 11.40V.
I will try to turn it over by hand if the next few electrical attempts don't pan out.