Basic physics says lifting 500 lbs (?) of bike 2'' into the air is going to require some effort.
There is a lack of appropriate leverage on an 81 c/stand, combined with lifting the bike that high.
After all has been said regarding technique etc, etc, shortening the c/stand will make a big difference in lessening the effort required.
Shortening the c/stand will also reduce the ability of the stand to be used in softer terrains..........as well as making it difficult to remove your wheels.
Does your stand have the little square plate on the end where your foot is meant to be placed when deploying the stand?
Lord of the Bings, kangaroo farmer