Koni Yellows, rear end jumpy on bumps

I have installed Koni Yellows all around on my 2012 V6, along with Steeda Sport springs in the front. Since the Steedas only lowered the front end by ½ inch, the 1 inch drop in the back was too much, so i reinstalled the rear stock springs.

Car drives great on most surfaces and is a blast around the track, but the rear end gets jumpy over sharp bumps. The stock Pony Package suspension used to float and the rear end would dance on bumps.

I can adjust the front Konis from full soft to 1 full turn up front and they are firm, in control and never uncomfortable. But i am already at full soft in the back and i wish i could go softer. A sharp bump on the road makes the rear jump a bit, but the Konis take the hit and settle, keeping the car in control. It is just a bit annoying and distracting

Only mod in the back is a BMR adj phb.