I bought a new chair, the HÅG Capisco. The first time I sat on it I felt like the included hydraulic seat post was too tall. The sitting angle was unlike any chair I’ve ever used. Honestly, it felt wrong. I started down the path of ordering a shorter stem sold for the chair. Before going through that bit of trouble I decided to check the instructions for further adjustments. I found an instruction booklet under the seat. It showed how to adjust the chair for proper height and gave a key explanation. Reading the instructions to understand proper design and use of the chair prevented me from spending money or time on obtaining a new piston for the chair. It's supposed to be that tall.