hey mate you say mk4 so are we talking a turbo?

its just that ive noticed youve got discs on the rear and they are known for going twichy on braking especially on corners

have you fitted extra valves in the braking pipes?

tbh the fact that the bar isnt coming out wont be the problem the top picture the bar could have just been tightened alot! compared to yours which are just pinched?

hope some of this helps