Exhaust internal diagram

Evening all,

As some of you know my Blueflame can is slightly wobbly, and we've come to the conclusion that it must be the internal welds that have broken as everything is tight (see below)



I've got a friend who said that he can cut the exhaust down as it is a bit long for the bike (planning to take about 4 inches off it) but he'd like to see an internal diagram of it first. Any idea where I can get one of these? I've had a little look around with no joy.

Cheers,

Paul