Rear bump stop question.

I havn't taken my car out much since I did the suspension work.Today was nice so I took it out for a spin.Full tank of gas and no spare or jack.The rear seems to bottom out over small bumps.I have the pro vert springs and mach1 shocks and struts.I also have UPR uca and lca's.The front rides great but the back is harsh over bumps.I cut the factory bump stop on the rear in half.Ive seen people lower then me using the same shocks.
So I guess what I wanna know is.What are you running for rear bump stops?Is a factory one cut in half enough?Also I have read the sn95 shocks have bump stops built in the shock.Correct?Anyone have any input for me?I don't wana get new shocks yet.

I had time to mess with my car today.I removed the bumpstop and bracket it mounts to.That seems to of fixed the problem.I cut off all the soft runner from the factory stop when I lowered the car.Youcan see where it was still hitting.
Should I get an aftermarket stop or just leave it with out one there?Is it possible for the rear end to move far enough to smack the floor pan?