I have same issue. The Tpanel is a bit too high. Not much adjustment there. You could try to bend down the tabs on the back of the TPanel but it is mainly due to the REAR SCREEN FINISHER (Part Number: 105721A) being old and warped - not stiff enough anymore to hold down the TPanel. It usually bows up towards the center. If you had a stiffer one, you could get the louvers up closer to the TPanel and away from the rear facia/latch.
Some of the vendors sell a stainless one that has to be better than this old plastic. I just have been dealing with it for all these years. I may replace one day if it gets too bad and my louvers are touching the rear facia.