will the leak dosn't bother me that much. i just coat it with JB weld and re assemble it.

What bothers more than then the leak is...the back half will take on a flight path of it's own during flight.
i got lucky and found mind. I found other's mufflers too while searching for mine.lol

i managed to get a hold of some metric nuts with star washers. Then I double nutted it. then I put JB weld
on the threads behind the nut to prevent the nuts from vibrating loose.