A few days ago I decided to make a rock garden. I put a pattern on the ground everywhere but the 6 spots that I wanted the rocks to spawn in. The first 4 days I got rocks in exactly the spots that I had prepared. The last 3 days in a row I have only gotten weeds in the remaining 2 spots. I have been over and over my island to see if maybe the other 2 rocks spawned somewhere else and they haven't. I have had friends over, looking and they do not find any rocks except the 4 that are in the garden. Every day I am getting weeds in the spots designated for the rocks. Can anyone give ANY ideas on why I cannot get those last 2 rocks? Thank in advance.