My RS9000XL rear shocks (RS999215) are currently installed upside down (adjustment knob on the top of the shock) on my vehicle. Talking to Rancho, they indicated to me that the shocks need to be mounted with the adjustment knob on the bottom of the shock. Rancho states that upside down installation of the RS9000XL can allow a bubble to form in the shock affecting shock response.

So, going to flip the shocks I find that the bushings/sleeve combo on each end of the shock only allows mounting upside down (as currently mounted). How have others addressed this issue?