RTTs are always gonna sway more as they’re always the highest points. But these have worked wonders for me.

Camco Heavy Duty Leveling Blocks, Ideal For Leveling Single and Dual Wheels, Hydraulic Jacks, Tongue Jacks and Tandem Axles (4 pack) , Yellow - 44501 https://www.amazon.com/dp/B00480BWBE/ref=cm_sw_r_cp_api_glt_fabc_38K20QKRTSQH5V1C7SWZ?_encoding=UTF8&psc=1

These aren't the same brand I bought but are pretty much what I use.