You need to angle the seat.. set the height to what
you like BUT raise the front of the seat so your upper
leg(thigh) is just resting on the front... tipping the
seat to get that... your way more comfortable.. the
back of the seat is in most cases at 90* to the seat
bottom... I set the seat back so I hit the floor with
the gas pedal... there really is a science in the
way a seat is mounted.. but thats the basics