Years ago I installed 2 Bal scissor jacks a few inches behind the front landing gear on each side,also have 3" x 4" x 20" long lighweight dunnage blocks bolted to all 4 scissor jack pads which provides a large footprint when cranked down tight and helps prevent movement.I use Bal crank out tire chocks between the tires too.
With the tripod on the pinbox and cranked up tight there is no movement in the bedroom / bath area. Thinking about installing 2 more scissor jacks mid way on the frame on each side to take out the small amount of movement we get sometimes in unlevel sites & take more weight off the tires which enable movement.