With a bar like the one you have, your mics are really close to each other. Therefore, they'll pick up almost the same sound and your stereo image will be a bit weak. When you say you're running A-B, are your mics positioned in parallel to each other? If yes, you could just rotate them a bit to get a wider angle. You'll probably not be able to get the full spacing as required by DIN/ORTF/NOS specs, but your stereo image should get at least a little better.
You might also want to consider getting another stereo bar. Adjustable ones aren't really that expensive. Try
this one, for example.
That being said, I don't think your recordings sound that bad. Keller Williams suffers a bit from the crowd noise, but that's nothing a different mic config would have prevented. The only thing you could have done is to get the mics higher up. The Mantras recording seems to be panned a little bit to the left. Is it possible that your left mic pointed to a stack and the right one didn't?
Especially in small, bad-sounding places, I found that simply pointing the mics at the stacks generally works best for me. In one of the places I tape, DIN or ORTF are just too wide. The mics would point to the side walls and pick up a lot of unwanted reverberation. But with all things in taping, you just need to experiment a bit and find out what works best for you.