Here is a little different mod. Simple, but it works.
stead of turning ash pan over and trying to position it just right, I left the ash pan right side up as high as it will go.
Then just used those cheap disposable lids to those foil serving pans. One small and one large. They kind of overlap a bit.
You can see I snipped a couple of slots so that I could get the lids right next to the wall.
Same on other side too.
Now you have a flat surface that you can set water pans and the like under the grill.
With the grate flipped upside down, you don't have that option so easily.
I took a pic with the grill over both pans, but camera decided to quit working. Anyway, It'll fit.
But smoke was just the same as if I had flipped charcoal pan upside down.
Except this way, I can set water pans easily without try to balance on curved surface.
Now that I know it work okay, I will try to fit lids a little bit better, and maybe punch a few holes down the center for smoke.
This cheap trick opens possibilities. We can slide bricks or shallow sand pans into the coal grate for heat retention.
Do your own thing with it.
Note: You "DO" have to watch rust on your cast iron food grates when water pans. It seems to remove grates seasoning a bit.
Brush off and coat with oil after removing water pans, and let remaining coals burn to re-season your grates.