Another question before anything else on leveling--are you on a cement/asphalt surface?
Important if you are not for future settling into ground...if on dirt/gravel, etc--you should have something under the wheels that is solid--1 or 2x8 treated lumber is usually good. If on a paved surface, then maybe only something under the low-side wheels if off-level.
If sxs hasn't been bothering you already, then maybe ok already, but this will change later if on soft surface.
If you need to level sxs, then best way without a truck to move it is to get a floor jack or a bottle jack that will fit under the spring mounting plate (flat steel plate with the u-bolts thru it holding springs to axle) and jack each wheel up, then place needed boards under each one. Then it on to f/r leveling--raise rear stabilizers (never raise front with rear stabs down), then use front legs to level f/r. Same advice if on soft surface to have larger solid plate/board (use 2x12 stacked and alternate grain direction if use 2 pieces) to prevent future settling. Get it level f/r and then lower rears (again, after placing some boards under them, even if not on soft surface--remember, trailer will be more steady if rears are not extended real far. After all this is done, you can place the tripod back--I don't think much of them, but for a long-term deal, probably will be an asset.
If you prefer to contact me direct----
joedobry@gmail.com might be easier to talk that way.
Joe