Hi guys and sorry for my english!

I have in my euro ctr FN2 TODA header and exhaust. After couple months from my midle silencer bring out wird noice. Something knocks while accelerating.
I made video clip and sent to my dealer.
http://www.youtube.com/watch?v=aa2JA2abt0g

TODA sent mi NEW silencer!!! but problem with silencer starts again!! Im tired and i dont want to record
another video and fight for next silencer. I think this is manufacure problem and all new silencer will sounds the same after few miles...
this is from my frend
http://www.youtube.com/watch?v=47_gn0I3Osg

My question is...... can i remove that silencer (cut off) and install 2,5 pipe like rest exhaust. Can i demage last silencer or if i cut off midle silencer my exhaust will be only louder

thanks for edvices

 

is it rattling loose or vibrating againt it's mount?