Not sure where your from? Location?
But if the drive has been in saltwater 1 time.
Be very careful when removing the screws as they ain't the biggest or strongest.
They get corroded and will twist off real quick.
I spray with PB Blaster or any penetrant and tap with a hammer and even a propane torch.
Take your time and it will come off eventually.
I spent 2 hours removing 2 1/4-20 screws on an older motor.
Oh yea, Welcome.