[rverdlm]

I still agree with Bruce, especially about how high you must jack when under the frame. In my mind it becomes a safety issue. Also under the spring plate you're only lifting the weight on that tire, where as under the frame you must lift the entire weight of that side of the trailer. I've been jacking under the spring for years and I've never bent an axle. Just be careful to center the jack under the spring plate.