you say:

The driver side will not lock by key or by pushing down manually..

You refer to the driver's door, right? That door has an extra feature in it that prevents the door from being locked by key or button if the door is open.

On my 1988 244GL, we found that the door can seem fully closed, but not enough to allow locking. Another, harder, closing does the job every time. Note that disengaging the central locking system will not affect this "protection".

The other rain dance you are going through can be related to age and hardening of the lube in the solenoids.

Find an independent Volvo shop to work with, many dealers are focussed on your wallet more than on your car. Some say it's a form of IQ test. If a customer is willing to pay $1,000+ for a "Lock alignment", he has money and is a fool, and you know the rest of that.

Good Luck,

Bob

:>)