haha that would have been the best option!
I had purchased the rivco and it sat in my garage way past the return period so I figured I might as well make it fit. When I started I had no clue how drastically different the valkyrie kickstand was from the goldwing. It wasn't mentioned anywhere. Figured I would post here so someone would learn from my mistake and save them some time.
I did exactly the same, but did not have to grind off anywhere near the material that you did. If my memory serves (it rarely does), when I bought mine it referenced the Valkyrie, so I bought it and didn't install for a long while. When I did, I noticed fitment issues, but I was able to fix that with a heavy file on the top
of the kickstand foot. This leads me to believe I got a different product than you did. It looks identical to mine, however, and I used a drop of blue Loctite on the set-screw for safe-keeping as well.
I'll look into my Valkyrie file sometime this week and see if I can find any packaging or info that might clear that up for us (whether or not one is available specifically for our Valk, and not the GW). I also have another piece of plastic that I carry in either my hip pocket or rear bag that will support the bike under the kickstand even in very soft ground. Specifically made for this purpose. You've probably seen them in catalogs, but I'll take a pic of it and post it after I look up the "foot" part paperwork.