Zefal HPX Head Replacement Parts

[Jeffrey Phunmongkol]

Hi all - a long shot but I am looking for a Zefal HPX head replacement parts...bought a pump and the thumb lever broke during transit. The innards appear to be for Schrader use only (I've tried flipping the adapter and washer around). The assembly is different than a separate HPX I purchased with the reversible head. Any help would be appreciated!

Thanks,

Jeff