I've had trouble before as well.
My personal approach is to export to .X format from LW then convert it from .X to .B3D using unwrap 3d ($50). It's a great program and works like a charm.
BTW, Svenart's right about the linear conversion. For the most part I just bake all keys. I currently have several hundred frames of animtaion on my main character and the .b3d file size is still only around 1.5 meg in size.
My personal approach is to export to .X format from LW then convert it from .X to .B3D using unwrap 3d ($50). It's a great program and works like a charm.
BTW, Svenart's right about the linear conversion. For the most part I just bake all keys. I currently have several hundred frames of animtaion on my main character and the .b3d file size is still only around 1.5 meg in size.