Adding to this thread in case anyone else finds this. Here’s one option I’ve used to overcome this problem. A friend has a Honda Crosstourer, lowered before he bought it. He bought a second hand side stand, we measured how much to remove to achieve the required angle. I removed the required amount from the centre of the stand, inserted a solid steel section, roughly 3 inches in length, which was welded into the lower half, this then slid into the upper section until both sections butted together. Finally, this was welded into the upper piece, creating a solid inner brace. It worked really well, and allowed the welded joints to sit virtually flush with with body of the stand. When painted, it was a solid, and very neat job.
Regards Martyn