4.8IS left front knock under breaking.

[g-man-4.8is]

Hello all. I recently purchased an X5 from a user on this site. I purchased it with a slight knock "sounded like a worn out bushing" while breaking. Also while turning at slow speeds.

I jacked the front end up and tried to check all the bushings I could within reach and steering linkages. All the bushings feel soft and the movement is dampened. Is there something else I could Look into easily. I mean without lifting the car up?

Do the ball joints cause a knock on acceleration and deceleration?
Could this be an axle issue?
Receipts show relatively new bushings and front air suspension.

2005 4.8is X5

My apologies on using the word "KNOCK", its the best descriptive word I could think about.

Also, Happy to be a new user here, 1st Post!
-G