the mesh limit is per chunk, not per plot-column and not per-plot, so if the bits of the chunk you haven’t beaconed regenerated and inserted surface-resources say, that would have pushed the mesh-limit over the top in which case yes, you can remove meshes, but not replace them until you remove some extra meshes elsewhere.
I know how you feel Fida, it’s what I encountered when building my new place on Trung, started with basement for storage then when I finally finished it I went to place my machines, first machine placed, thirteenth coil could not be placed due to hitting limit.
I had finished the building itself as well already and soooo didn’t want to redo the lot but had to anyway…
If the mesh check had been in place like it was supposed to, it would have flagged earlier for me to do things differently with combustion, so would have been less of a pain.
Looking at it, the best thing I can do is remove all the storage on the half of my storage floor I don’t use so much. Then swap the combustion and kindling fields, so the kindling is under the storage blocks, this will just be a case of swapping the corruption for bitumen and chiselling a few more lava channels.
Then I just need to think what to do with that half of the floor I am leaving empty.
Maybe even move all my machines there, or something.
But for now, remove the excess storage blocks, and swap the farms over.