Thanks! I was also thinking of spacechem, I wanted the target molecules to be more similar to real world molecules, but didnt get to it.
The controls can be a bit fiddly, especially if people dont realize you can disconnect rocks by simply usnig the pin and slowly pulling them apart. If you always jank them apart, stuff will fly around everywhere.
Good job on figuring out the difficult part with the black/white pearls^^ it was one mechanic i did not explain, and it actually was a bug that i turned into a feature.