I've done a fair amount of damage to this swingarm at this point so I'd rather start with another one. Since this one will likely die in the name of research, I continue with some other plans to test them. I remove the middle ridge on the outside and drill a large lightening hole in the middle.
But the bit floats some and misses where it is supposed to come out. I need it to exit on the arm only and miss the center section. Now this swingarm is really messed up.
I continue with a second lightening hole and that seems to go well.
So does anyone know of a cheap used swingarm?