Rear flip kit bump stop ?

[Bennydog]

I know this has been done to death but though I would ask. I just got done doing a 4.5 / 6 inch kit from Western Chassis. Up front i did 2.5 spindles and 2 inch drop springs, drop springs, new control arm bushings upper and lower, ball joints, tie rods ect.. Front is great, BUT

Did the rear today, Flip kit, rear shackles, shock extender and drop shocks, Have a heavy half 75 C-10. Took the helper/overload spring off put new bushings in the leaf springs, installed the shock extenders and drop shocks as well as shackles. put wheels on dropped it down, bump stops on the axle, No suspension. Jacked it back up put the leaf in the 1st position of the shackle, dropped it down looked like i had 1/4 inch from bump stop to frame, jumped on bumper, bump stop back on axle. I took before and after measurements and i am only dropped a little under 5 inches. If i remove the whole bump stop assly i would only have 2.5 inches if it doesn't drop anymore once the bump stop is off the axle. I was hoping to avoid any kind of notch.. Is there anything else i can do here? Thanks