If you still have your original rear sacs, put them up front in the walkway and have 1500 in the rear, and 1200 up front. Pretty good chance you have it too heavy in the rear. My 07 really likes more weight up front and it keeps the wake cleaner. We have not calibrated PP, but I ride 70ft at 24mph and the wake is nice and clean. If we get too much weight in the rear or put the wakeplate too far up, it will wash out sooner though. Basically, the more weight up front, the better it is for me. Firm, meaty, with good boot. I prefer a more rampy wake so I keep the plate most of the way down, but it can get pretty peaky if you bring the plate up.
I don't have my 750's for the rear yet, but I will next month and my stock sacs will go up front. I have had friends bring out about 1k worth of sacs and the farther forward they are, the better the wake.