Hex,
FWIW I have to agree with CoachJim in general. Do not use 2 different set of pitches; it is major trouble. Your new set of pitches make plenty of sense, IF your hand's physical traits justify that. If you're having no rubbing or blisters or wrists or forearm troubles, then this is probably the right thign for you.
Over the past 4 years I have gradually gone from 3/8" reverse and 1/4" left lateral in my thumb (I'm right handed), to 0"/0". My release and my PAP has not changed. Infact, it's easier to change releases now. If the grip is comfortable, maybe it's just something you have to work on. Maybe a decent wrist device (like Mongoose or Pro Release, etc) can help you a bit to get the right feel. (Try not to depend on them unless you have a wrist problem.)
FYI with your original 1/4" under, it should have been a lot harder to get axis rotation than it should be now. That promotes a more end-over-end release, in general. It should actually be easier now, solely because it should be easier to get a clean thumb release.
--------------------
"None are so blind as those who will not see."