My 2003 Gtx Ltd 4 Tex 215 SC has a resonator that was cracked , I got it repaired at a plastic company. I hooked it up tonight and attached water supply to the machine and Started it . The exhaust was not leaking out of it so I felt like it had fixed itself. I than reved it up and I could see it expanding from pressure , it eventually popped open again. I can’t seem to find this part anywhere online. Any suggestions on a bypass or where to find part. Is it normal for it to have so much pressure? Any ideas much appreciated.