Could also be just limited time using it. Without knowing more about you and seeing you play I couldn't really tell you what about the P92 isn't clicking. You may just need to play more and more with the P28 and find what shooting mechanics will work best for you. If you're changing often from the P88 to the P28 I can see why you would be missing pucks high. The P28 is very open compared to the P88 and that will make the puck naturally rise. What might put the puck up top in the net with the P88 could send the puck over the net with the P28. I think going with any of the pro P28 variants would be very much like what you are already experiencing. If anything, they are more extreme in terms of their shape.