Wondering front end?

[Salty_Dog]

We have a 2006 e53 3.0d with Sports/Premium pack.
168 20" rims all round
240,000k's

Ever since i got in this car 2.5 years ago, the front end has always had a very different feel, a heavy feel.
You always had to muscle it to some degree while driving.
Then it started to really pull off the road, bumps or whatever, would grab the steering, you really had to DRIVE the car.
I always put it done the massive wheels and tyres fitted and firm as a rock sports suspension.

Thinking it was the worn tyres, we replaced them.
At the time, i asked for an alignment, but the guy gave me some story about he didn't have the shims he needed??

The old tyres wore very even.
These new tyres, now with 10,000k's, also wear very even.

The new tyres seem to fix/improve the steering
But in the last 3 weeks, the vehicle has gone back to its old ways.
In fact, it almost feels like something is disconnected in the front end.
It will track straight, then almost fold and pull away left or right, depending on road camber.
It will do this quit quickly.

There is no shudder under braking
It doesn't pull under braking

Now, being its a 2006, i'm sure none of the bushes have been replaced.
And i know for a fact it hasn't had a front end alignment in 2.5years.

So i guess i am starting with an alignment.
Question, would anyone like to add or have any advise on my symptoms?
Can anyone do an alignment on these vehicles or is it a BMW thing?

Lastly, is there any front end experts in Melbourne or Geelong that might be a great place to take the vehicle

Thanks