I made all these leave block with the block generator. This mod is a great mod, I recomend it to you a lot. I didnt do the logs because there are oak logs. In a world with this mod, you can do automatical farms of apples, lemons, oranges, etc and with another things. Link to the mod´s forum (it havent got its own website) http://www.minecraftforum.net/topic/918168-162-smp-forge-better-farming-v340/