This is "Pre-op":
This is the axle dropped and ready to install lift spacer. (I loosened the bolts on the other side 1st):
This is spacer installed (I applied 1 coat of Rustoleum primer and 3-coats of Rustoleum gloss black to prevent rust):
I haven't taken "Post-Op" yet
You will notice that my 2.5" spacer is longer than need be (13"). This is because of my original plan to move the axle forward, which I could still do at a later time, If it is necessary.
As a side note, the use of WD40 on the old bolts made a HUGE difference.
BTW.......With weight on the axle. The center of the wheel is just above center of the axle, so any wheel movement (that matters) is up and forward.
At least I won't have to "Drag" the rear of the trailer across he sidewalk anymore..... If nothing else, Ive gained that...