Last night I cut off the pipe behind the cat and found the dog, just kidding! I cut the pipe and I can feel the remains of the ceramic in the converter rolling around like a 5# boulder. You can roll it around in there with your finger, so it's been bad for a long time. I assume it is actually the muffler that's plugged with converter parts that caused the power loss. So that case cracked, is there a place to buy a reasonable replacement converter?