take it for waht its worth,but i have split alot of hhb/elm and other types of interlocking grain wood
i find its best to let them sit and dry in log form for atleast 3-6 monthd,depending on log diameter
then split in half and leave sit again for 3-6 months,then quarter it
i find doing it this way keeps them from twisiting during splitting,which is common with these types of wood regarless of what
the bark pattern is,good luck