[Woodz428]

10 volts won't do sh!t. It will make the starter rotate slowly while not kicking the gear out. I have also seen a low battery "weld" the contacts within the solenoid and keep the starter cranking. It's WATTS that operate electrical devices...volts times amps. If the battery is too low it won't create enough amps to do the job, if it's just low enough you will get the watts from too much amperage draw and cause the solenoid to stick. A fully charged battery is 13.2 volts and 10 volts is waaaay shy. If you don't have at least 12 volts anything you attempt will give a poor result. Charge the battery before you start throwing things at it. 10 volts, you've got to be kidding.
If it hasn't been mentioned, make sure that you have a good ground to the block also. Insulated mounts have poor conductivity.