Thanks for that. Problem is they're for 7/8" bars. I've found several for 1 1/8" and 7/8". Barons Customs has a set for 1" bars but they are 1 1/2" rise which makes throttle cables too tight at full left lock. Trying to avoid new cables or changing to IS throttle boss. May have to get some new risers as mentioned in this forum. Sent a FB message to genmar to see if they are still open and have the H121 risers I'm looking for. They're last FB post was 2018 so not holding my breath.
Those Barron's riser spacers are listed for Yami Venture 1" bars, so they may or may not work for Valk. (call?)
Some with taller risers with throttle cable trouble at lock have relieved the trouble by rerouting the cables inside the triple tree. Pad tank, loosen riser bolts, slide bars left, remove and reroute cables inside tree, reinstall cables at grip.
I have not done it, only read about it.
The risers Dan Meyer posted breaking were complete aftermarket 4" risers, including the top clamp that cracked. Riser spacers reuse your OE top clamps.