While poking around the NHTSA website I found some other interesting TSBs that might be of interest to some of us. One is for replacing the shocks and the other is for a missing heat shield for the ISL (which mine is missing). The NHTSA recall website link is: https://www.nhtsa.gov/recalls
Enter your year of coach and or year chassis manufacturer (ie 2019 Entegra or 2019 Spartan) and you will find the recalls and TSBs for your coach. If this info has already been posted, sorry, I just wasted a few minutes of your life, If not, I hope it helps.