After an e-mail to Simpson, they advised me to send in my PJ2 Best that had developed a shedding problem. This brush is ~2+ years old, only used around 50 times and started losing 5-10 hair each use. It was purchased off the BST forum, so no receipt. Two weeks after sending it to Simpson, I now have my brush returned with a new knot of best badger. Excellent customer service imho. Thought you guys should know. Regards, Bradley