Thanks for all the advice. For now my issues seems to be resolved by increasing the INT Delta required to change BLM. I went through the difference tool in tunerpro like you suggested and browsed through all the differences between my custom bin and the 454 auto bin I'm referencing. Honestly I don't see anything related to open loop idle that I haven't already copied directly to my bin and/or played around with to get where I want.
In the future, I'll probably start fresh with a 454 auto bin and go from there. For now this is working just fine for me, so I think I can put this thread to rest for now. Thanks again for the help!
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