I bought the Ergo Elite Office Chair in May of 2017. Love it! After about 2 years, it started creaking a bit and slowly increased over the next year until it was quite loud. I emailed Madison and asked for a manual on how to open the seat casing and lubricate the springs. In less than a week, I had a replacement seat sent to me! I just had to take the back, arms, and cylinder/legs off and put on the new seat. It was amazing! I expected a manual and got a new seat instead! This is by far the best customer service I've ever received on a product and the speed in which they took care of me - less than a week from my email until the replacement seat was at my door - is stunning! Madison Seating is now the only place I will shop for future purchases and will gladly refer to anyone.