Larry is right about not using the stabilizers as jacks. I can't find the reference at the moment, but I know I have seen it.
On the other hand, the Dexter Company, which makes the wheel and axle assemblies for TM, says the following about storage (a copy appears on page 27 of the TM owner's manual).
"STORAGE PREPARATION
If your trailer is to be stored for an extended period of time or over the winter, it is important that the trailer be prepared properly.
1. Remove the battery ...
2. Jack up the trailer and place jack stands under the trailer frame so that the weight will be off the tires. Follow trailer manufacturers guidelines to lift and support the unit. Never jack up or place jack stands on the axle tube or on the equalizers."
On page 11, the owners manual gives the same instructions for changing a flat tire - place the jack under the frame just behind the axle - not on the axle itself.
The Goodyear website has a new section on Trailer and RV Tires - much easier to find and use than it was before. At
http://www.goodyear.com/rv/tirecare/maintenance.html they say "Ideally, a vehicle in storage should be placed on blocks to remove all weight from the tires."
Conclusion? Lift it, but not by the ends (stabilizers), and not by the axles. Do it at the center of the frame.
Hope this helps
Bill