I have them on my 2850 EVO,I would say they are ok, I like my TT as solid as can be. I just put one of those pyramid stabilizer jacks on each side by the suspension and that firms it up a lot. I did just use the stabs the first couple times and it was ok, the biggest movement is when my son runs around (he's 3) and when people are entering or exiting the TT.
I do put lynx levelers under my stabs so they dont have to travel as far and they seen even more stable that way, Ive got 5 under each foot.
2015 Forest River EVO 2850
2012 Dodge Ram 2500 6.7 Cummins
Yamaha 2k x 2 with parallel cable
EMS 30 PI portable w/ Edison plug
Nights Camped (2016-13) (2015-13)