Topic: Advice on vert bar parts

[mmadd29]

I currently have Superlux mics that came with a bar and shocks.  Now the quality needs alot to be desired.  My problem is that it seems that I just can't get the shock tightened to the bar as tight as it should be.  Now it works and the mics don't move, but it just feels like it could more secure.  I actually like the bar, so I was thinking that I could remove the crappy knob screws that are on the bar and replace them....will most likely replace the shocks as well. 

Where is there a place online you can buy just parts for a vert bar?

Thanks