I could try to shave off some area here by moving the calcifier and the berlo, but I've spent too long on this already. As far as I could tell, the only way to get 1F is by using a hex arm on a track loop and advancing the arm along the loop for each grab. This solution has 19 pieces of track, and I could see it possibly going as low as 16 (270 G), but maneuvering the atoms around at that point becomes difficult and you may need to add more track anyway because you need to reach a bonder from a certain position.