Kickstand mod. Is there an ideal lean angle?

My Magna leans 12 degrees when on its kickstand. To my eye, not enough lean.
The Valkyrie leans 20 degrees. Seems to much to me. Its a bear to get upright.
The KZ305 leans 17 degrees. Seams a little too much, but close.
So is there any concensus on what is the right lean angle when parked on the kickstand?

I'm sure the manufacturers would design the right lean angle into the sidestand.
May not always be the case though.

I would like my bikes to lean so that they are not easy to knock over when on the side stand.

My kz650 leaned over too far, but I had changed the rear shocks.
I put shocks on that were 2" longer.
I was using a piece of 2x4 under the side stand at times, and started carrying a small piece with me under the seat.
Until someone chimed in, "Why don't you have the side stand lengthened?"

I had not realy thought of this.
And I had recently bought a sidestand on eBay, as the one on my KZ was missing the little kick down peg.

So I had two stands.
Took them both to a professional Welder (I can't weld), and had 2 1/4" cut out of one stand and added to the other.

What starts out as a perfect kick stand from the  factory can morph on its own  over time with use and mods to the bike.
Over  44 years  my stand has bent as has the mounting tab on the frame. 
Spent a lifetime  sitting on my bike at partys and on the prowl for girls.  So sometime  you just got to adjust the whole thing 
Our frames are softer than you might think and a cheater bar and pipe wrench can easily  bend the tab back to the original postion
Or  a vise , heat and hammer  to take the bend out of the stand works too.
By habit i would look for proper pitch of ground  to rest my  stand on  so not having to  worry about a slight nudge  causing a catastrophy
DD

SIDE STAND ADJUSTABLE

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