Remember that, if you fool around with the tilt of your saddle, tiny adjustments can make a big difference. Try adjusting the tilt a millimeter at a time. With your bike on a level surface (across my garage door the floor is level, but along the length of the garage, the direction a car would be parked in it, the floor rises from the door to the back wall) lay a level along the length of the saddle and see if it has any tilt. Adjust to move the bubble just a bit.