The pictures were helpful. Yes, I’ll look into that.
Question. Have you tried to see if this adapter works with the smaller inflation valves Matt sells? Currently, I have one of the white adapters that came with the Flextail pump epoxy’d on permanently. It fits loosely over the valve’s head but is sufficient to get these smaller objects filled quickly while still fitting snuggly into the Boston Valve so long as the top is completely removed.
It would be nice if this adapter could be configured as a one-size-fits-all setup.