I took your oak model and using DBPro, I saved the mesh to an 'x' file. I imported the X file into MilkShape 3D, re-assigned the textures and exported it as an .x file. I then loaded the X file into DBPro and saved it as a .dbo file. I don't really see much difference between the two. As far as replicating, are you talking about cloning it? I'm not sure I understand the problem. Just for fun, I cloned the revised oak and it worked fine. Pic included too. Simple code I used:
sync on : sync rate 60
LOAD OBJECT "RevOAK.DBO",1
set object transparency 1,1
for t = 2 to 10
clone object t,1
position object t,rnd(500),0,rnd(500)
next t
repeat
control camera using arrowkeys 0,2,2
sync
until spacekey() = 1
for t = 1 to 10
delete object t
next t
sync
end
So many games to code.....so little time.