My husband uses Invacare 9000 XT customized for his tall frame. But he isn't gentle on it, so we've had to replace the armpads because the covering cracked. I'm committed to keeping it in "like new" condition so this time I needed to replace two "plug buttons" at the end of the arm rest frame. Again, customer service was quick to answer my questions and get my order placed. Thanks much for your kind help.