May not be the best way but here's how I lifted mine - found some discarded 6x6 landscape timbers and cut them into a variety of lengths starting with 4 pieces at 18" for the bottom layer of the cribbing - I wish I'd gone longer but thats what I used.
I used four sets of cribbing timbers - two per side, one for a bottle jack behind the axles and a larger one for the frame between the axles.
With the hitch trailer jack wheel removed and post well supported I lifted each side six inches at a time, restacking and adding a 6x6 timber onto the stack between the axles to get a minimum height I could work with, then I leveled trailer w/ shims and removed jack cribbing. I may need to lift trailer higher at some point but as you see it has been okay so far.
I had some interference with cribbing when dropping the axles but nothing a little more crowbar action didn't fix - and also can not put the wheels on with cribbing in place, but I feel fairly secure the trailer isn't going anywhere..
Here is a picture of the Missus trying to decide where the axle graveyard will be...
Linear Mode
