Whilst it was lose and in your hand, did you happen to notice the design of the baffles in the main silencer part of the exhaust? Is it a simple absorption type (ie: straight through with holes into the outer padding), or a fully baffled type? I know the stock pipes have 2 welded in circular discs-with-holes in the end pipes, but I just wondered about the main silencer section.

Hopefully you get this sorted soon too!