I know a few of you probably already do this but I'd thought I'd show as I love this mod, especially since using lump charcoal, no need to worry about those small pieces falling through the gaps of the grate . Best bit is I haven't had a burnt toe since doing this mod
All you need is some expanded mesh, angle grinder, tie wire and some pliers
Remove the grate in the bottom of the starter. Trace it onto some expanded mesh
Cut the circle out(Use PPE), tie it to the grate with the wire and fit it back into the starter and your done!
Here's one I did to the Weber starter, just flip the grate so the cone faces to the bottom