Your leak data looks fine to me. On the two nights of data shown, the unintentional leak rate (bottom leak curve) is usually well below 10 L/min and the machine can easily compensate for that much leak. Yes, on one night there appears to be a borderline Large Leak late in the night, but it lasts for less than 30 minutes, and even at its worst, it's barely above 24 L/min.
Your AHI data, however, remains a wee bit on the high side: The goal is to get the AHI to stay below 5 consistently. The problem seems to be mainly obstuctive---i.e. OAs and Hs. Hence it's possible that your min pressure setting is too low. That makes it harder for the machine to quickly increase the pressure up to where you need it to be before the obstructive events start to happen.
Since your 90% pressure level is pretty consistently around 11-12 cm, you probably need a min pressure setting of at least 8 cm (and maybe 9) instead of the current 6cm setting that you are currently using. Bumping up the min pressure by 2 or 3 cm at one time, however, can be difficult to adjust to. I would suggest that you consider first raising the min pressure setting to 7cm and leave it there a week or two. Then increase the min pressure again to 8cm.
Is changing my minimum pressure something I should just do, or have the respiratory therapist or doc do?