I have an 8327ss that I had the same problem with. This is the first year we have had it. It has the factory electric stabilizers on the front and rear. I use X-Chocks every time I unhook also. The bounce was getting to me after a couple months. I put scissor jacks in from of the steps on the door side and at the same spot on the other side. It is about in the middle of the trailer. The ones I bought were on Amazon. 7500lb 30" jacks. After I put them on I jacked it up. After I jacked it up I realized I took all the weight off the front stabilizer and front jack. I was amazed at how much weight they would take. After lowering the scissor jacks to equally distribute weight back on the front stabilizers and jack I went into he trailer. It was solid as a rock. Didn't move when going up and down the stairs or moving around the trailer. The trailer is on concrete in my driveway and I have not tested this on wood blocks at a grass campsite. I am very impressed so far.
To install I drilled 4 - 5/16" holes into the bottom of the frame rail on each side and used 8 - 5/16" X 1 1/4" bolts with flat and lock washers. Took about an hour.
Here is the jacks I bought:
2008 Duramax K2500 Suburban
Allison 6SP - DSP5 Tuned
2014 Rockwood 8327SS