Captcolor (Bruce) (where is he, hasn't posted here in ages!) used to have one where the neck was warped at the front causing intonation issues. Whether that had anything to do with the slothead construction or was just tough luck or bad storage by a pre-owner is anybody's guess. My three slotties are all fine - no breaking and no warpage. I'm no great fan of the look though except that is is another strange Gibson idiosyncracy and hence more desirable among vintage collectors.