There are 2 different bolt diameters involved and I believe 2 different lengths of bolts. The spacers are 2 different thickness's AND I'm working from memory here.

None of my measurements will help you as I have since installed a trailer hitch. And everything I have mentioned pertains to an I/S. gordonv has an excellent solution if there are any Valkyrie owners close by-close can be next door or 750 miles or more depending on the owner.

RIDE SAFE.