Make it half the heighth it is now. The stock seat is so low the backrest rides too high in my back. Put the rest back on and rode the bike to the office today, 60 mile commute, and I just can't use it as is. I'm going to give them a call tomorrow and see if they can modify mine. As it is now, it is not comfortable to me, and I'd really like the option to use it or not.