Makes sense. SARCO lists part numbers for 0, 1, and 2 online but no stock. And on p 74 of their April 10th ad, they even have a special on bolt head 1. And show a price for a "standard" bolt head, whatever that may be. There appears to be a brand new bolt head 2 on Ebay. Not too sure where else to look, especially since it is not too urgent a matter.