Today I spent a little bit of time fitting the test heat deflectors for the grease area. These are knock off versions of the Weber 7622 defectors for reference and cost about $12.99 shipped on Amazon for stainless. I bought them from warehouse deals for like $8 delivered.
I took eight small binder clips, removed the piece which you use to open a binder clip with your fingers and slid them onto the deflectors. This raises the deflectors around 1/8", to allow for better flow of grease. My goal here is to reduce ash in the grease, reduce partially burned pellets in the grease and to isolate some of the grease from direct flame heat. Will this work? No idea, but for $8 it was worth a shot. Zero mods, buy and install.
One other thing is the little lip at the end covers the hole into the grease pan. Again, likely reducing half burned pellets from dropping down in there.