While I may be waaay off base here and I'm sure if I am, someone will chime in.... Consider "oaking" your IPA's and APA's. I for one, am not fond of that bite myself. My neighbor had me try an IPA he made after hearing my comments about not caring for IPA's. I tried it, smelled great, tasted great, finished clean, no bite at the end. How'd you do this? Oaked it at the end. I then bought a couple APA kits and oak chips. Put these in a secondary for a week, then bottled. Same result a beer that has a good hop smell, a good hop taste and no bite at the end. So I am inclinded to think oaking helps take away that bitter beer face a bit.