level 41-big boss-concrete trucks

am at this level and no trucks show up-any suggestions-have written Youda with no response at this time

There are some pretty specific instructions for this level on the walkthrough. This game is pretty buggy at this level. I don't know how long you have had this game, but there have been updates. You might want to check at the Big Fish forums for an answer. The biggest hint I can give you is that when you give up on the level to try again, be sure to NOT read the instructions again. That seems to be a pretty important component.