Best way to get a new computer chair, search online, buy the wrong one, get refunded, purchase this, fix your original, comfortable chair, problems solved. Only took about 30 minutes to assemble with little if any instruction. Could always use extra screws though.Updated Edit: After about a few months the cylinder went out, my desk helped any problems with that but after a year and around 3 months the base is wobbling and unstable again. Daily work use is an expected cause.