Anytime :-)
You don't make a custom mesh for trees as speedtree does it using procedural generation of trees based on numbers that you can set. You can edit any tree in the game as long as you don't change the texture name. You can change the textures and group numbers.
For example the name "tree_blackgum_composite_D" with group number "0x00000000" would be change to "tree_blackgum_composite_D" with group number "0x48000000"
As long as the texture uses a different group number it won't reference the original. Feel free to open my trees in s3pe and dig around. You might be able to learn something from them.
My explanations aren't the best but I hope I can slightly help :lol:
unfortunately I don't have tumblr but I could possibly make one for my sims 3 projects :-)
