CG's will vary as to what you like. I only had the prototype flying at 205 and liked it. None of my electrics liked it back there (maybe a glow to electric thing). I like to hold elevator when inverted and I like my snaps to stop when I'm done. Not sure why the trouble with stall turns. You might want to try a different techniques (higher idle, rudder sooner...) and see what works.

Not being a smarta** but stock settings are what I pull out of the box. No one has ever been given the settings, it was just "put wing here and stab here" type thing. I haven't checked one, much less measured one. I know the zero line is the chin crease, but that's all I have ever been able to get. Every Integral of mine has the same program as the one before it, just tweaked to fit the new plane. Nothing drastic between them. I have 1 early one (Nats one) that I need to fix the wing/stab relationship as it's not straight. Usually there's enough stab tube slop to make it perfect if it's not.