Hello Forum

I will be picking up 2 4435 cabinets today. I am looking for answers to these questions

1. Woofer repair: The surrounds are shot but I'm afraid there could be other problems too. Some of the drivers are seized up. Who does repairs to these drivers?

2. Amp recommendation. I am new to vintage studio gear and want to get the best sound from these monitors, so I'm looking for guidance on this one. Tube vs Not, etc, you know the drill

3. Speaker placement. How High?

Thanks For any help