I have always jacked my units up by using a bottle jack under the axle.
After seeing what happened to Ridgemans axle, and all the talk about jacking strictly under the frame ( apparently that is per Lippert instructions) it has me second guessing the way I have done it.
So, question is--what does everybody think of using a trailer-aid?? I suppose the correct question would be, what does Lippert think of using it??