Let's rock together ... slowly back ... now LURCH!
The wise ones are busy. I am the windy one, and here is my guess.
I have the Suzuki center-stand on my 2006 Wee-Strom,
and I like being able to check the oil safely, and to lubricate
the chain conveniently.
I am 71 years old, and I am not about to shove the bike off the stand
unless I am astride the bike and can land with both feet.
When my bike is unloaded, I can rock gently back and then lunge forward,
and the bike rises a bit, then lands gently on its wheels, braced by my feet.
Last week I rode from Sarasota Florida, and stayed nights at motels.
I cannot lift the bike onto the center stand while it is heavily loaded,
so I used the sidestand until the bike was emptied of cargo, then I
put it on the center stand and wiped and oiled the chain (while the
chain was still warm, don'tcha know).
In the mornings, I loaded the bike, and then had to rock back and then
lurch forward strongly to get the bike onto both wheels.
I suspect that your stand collapses more easily than mine does,
based on your clever and eloquent description of the force required.
Two possible reasons occur to me:
1. If the front suspension has been shortened (a task done with only
wrenches -- no parts required) then its posture is altered so that it
is always closer to collapsing than it was in its stock configuration.
Remedy: set the suspension as Mrs. Suzuki set it at the factory.
2. The stand naturally has a more delicate setting than my Suzuki stand.
Remedy: study the situation, and grind some metal off the proper place
so that the stand goes a bit farther past the vertical as you erect it.
For example, look at a jackknife and imagine filing some metal off the lumpy
part at the base of the blade. Depending on how you do it, the blade will
rotate a bit more, and close with less metal protruding. File too much,
and the sharp part of the blade will hit the bottom of the cavity housing the blade.
Dullness will result. Same bad result will happen if you file off too much of
the anvil (or whatever) that determines the limit of motion of the stand.