as some of you may have read I just purchased my first TT and I noticed last night while walking around it felt kind of unstable. Looking under the TT I noticed that it has no scissor jacks to level ...
The bag of lego's are to put under your tires to level the trailer from side to side. You lay them on the ground and build them up high enough then roll the low side trailer tires onto them and level the the sides.
What I talking about will look like a pyramid that's open in the middle and on the sides, probably made of an alum alloy.