When I lowered my bike, like DangerDan said, the jiffy stand tang dragged on the left and the exhaust bracket fasteners dragged on the right. Had to remove 1/4" of rubber off the jiffy stand bumper...tucked in at the business end almost an 1", and changed the nut/bolt hardware on the right and lean angle is much better.
You should also change your riding style to move your center of gravity to the inside and pressure on the outside pegs...while leaning the bike more upright..."hanging off"...it is how competitive riders compensate for low hardware which could upset weight distribution before hard parts start dragging. Practice-Practice-Practice...