First off is it 15' or sub 15', the one thing we notice in our Mondo is that as our lake shallows up on the one end and we get into the 15' range it really impacts the wave and the waves push. Not certain this is your issue but it likely is not helping as 15' is on the lower end of water depths for a good wave with these boats from what I have read/experienced. Also when you are saying that the pitch and roll are hitting the target numbers is that with autowake left on as with your crew size and weight autowake would likely be draining the rear bags to try and hit your pitch numbers. Not the same boat I know but I would load that 400lbs in the bow and pick up another 400lbs for the back if you need more weight but that is just based on my Mondo experience but not a crazy difference in the boat sizes and same ballast. We put a 400lb bag on the floor as far up as it will go and then a 155lb on top in the bow and when running light crew like you are we throw another 400lb bag on the floor as far back as we can get it. Not sure if any of that helps but I hope you can get it dialed in.