Hey Couple--Jeff here. I had the same issue with the rocking when we first got our 24FBS. Have done a few things but I try to remember that it's a TT, not a house on a foundation.
First I read on this forum that blocking under your 4 scissors jack will help so I always put 4-5 of those plastic leveling thingees under each jack and under the hitch too.That helped but not enough. Then I put on the X-Chocks which didn't do much for rocking but I think it's harder for the TT to roll down the hill if I have a senior moment while hitching/unhitching. Next I bought 2 retracting stabilizer bars and put one on front driver's corner and one on back curb side. That helps some more. Now I also put a platform under the 3 steps so the bounce is eliminated when you use the steps. All in all I am pretty satisfied with about 90-95% of the bouncing gone. The suggestion for 2 more centered scissor jacks sounds interesting....I'll have to think about that until next spring.
Let us know how things work out for you and Happy RVing.
2014 Jayflight 24FBS Elite
2009 F150 Supercab, 5.4L ,3.73, HD Tow Package, Equal-i-zer 1K,
Progressive EMS-LCHW30, TST 507RV TPMS, Hydro Life HL-200, Maxxis 8008.
Best friend wife and dog Cooper. RETIRED 6/30/16. WOOHOO! Now the "endless summer" begins.