Of course it is that same idea, so that you can try if in reality catalytic is the problem or not, you take it out and continue only with it, to leave it free escape.
What you should do is hagarra with a mill and cut it, I mean, then hagarras with a dough and a firewall you break everything and then wage where you cut. It is very simple
It dismantles it, puts a screwdriver inside, hit hard and make bits everything inside, of the ta, enough to go out one of the sides, nothing simpler will not stay with free escape sound ...