Your new trailer is MUCH bigger and has more slides. As ALJO said, it's likely there is more frame flexing.
Some folks put an additional support under the frame near the axles to reduce the bounce from the springs and tires.
Some folks put diagonal bracing between the stabilizers and the ground. There are a number of products and methods for this.
Usually the step light goes on when the awning lights are switched on. Have you tried that?
Sherm & Terry w/rescue Eydie (min Schnauzer) & Charley (std Poodle)
2015 Jay Flight 27RLS (Nights Camped: 102 '15, 90 '16, 80 '17, 161 '18)
2006 Ford F350 6.0 PSD, 4WD, CC, LB, SRW, Camper pkg, Equal-i-zer, GY Endurance (E)