you can only do so many attachments and then thats it. Same goes for uploading photo's to the site. you gotta get a "supporting membership" to get unlimited (at least for uploading to photo section not sure about attachments) or upload to somewhere else like photobucket etc.. I would check whats still in effect for supporting membership, I quit "supporting" the site a few years ago when alot of things with the site changed.
bottom right is what the flat plate looks like, sometimes you will see another hole drilled in addition to the kidney bean, some bikes such as Bird, Huffy, cat, and a few others would duble bolt them if they were in a fixed position and not piggybacking of an engine mount bolt.
I had actually made those above (had the plates cut to my specs) and used a batch of NOS stands I bought with the butterfly cut (top left). I made and sold alot of kickstands last year.