Btw guys, went back to fitters today, because I noticed the right can has hanging lower than the left.
Put her up on the lift and noticed the can was catching on a black bracket.
We came to the conclusion that this is possibly the bracket that is there to hold the reversing sensor box, and since it was holding nothing, I told them to remove it.
I remember that in another thread about fitting a Scorpion exhaust, in which also was mentioned that a "black thing" was either modded or removed.
Both cans are sitting ok now.
*edit*
updated first post with pic of corrected right can bungs out