Yes, I was, thankfully. It wasn't easy to get off, that's for sure. I used Gumout cleaner and then rinsed with hot water and let it sit upright for a day to dry completely. After installing it back on, the truck was still complaining and quickly returned to 'Reduced Engine Power' mode even after clearing the codes. I had great throughput out the tailpipe, so I took it on the highway. After 30 miles it finally switched to 'Drive to clean exhaust filter'. After another 15-20 miles, it finished.