Hi-
The pipes were bought off a mate and they needed a patch in at the back and the mend creeped round the side of the pipe and could be seen. I took out all the compartment type baffles and put in stainless perforated tube and new wadding. They are now solid and should last a few years- I just had to make some aluminium bands to hide the weld. I was hoping they looked like some sort of holder at the back!!
Cheers
John