i have in the last few months cought a very bad case of HAD.in lapping many hones all of them were high in the middle even the ones that were sold as "lapped" in fact the only dished stones i have lapped are the ones that i have used for 30 years in my workshop.now this makes me wonder if iam doing someing wrong or if other people have had the same experience? my hones are flat as far as i can tell.iam now lapping a arkansas tranlucent 8X2 3 days in useing 2 dmt 320s, realy alltogeather iam lapping this rock for at least 5 hours and its just the edges that dont touch the dmt. feedback?