first off this goes in modification discussion, this is why you were getting no help in suggestions and requests
as for your model, make sure you export it so that Z is up not Y
we need more info for what exporter you are using for whatever modelling program you are using and what blb exporter you are using, if you are using General's BLB exporter I know that the collision shapes need to be convex cube meshes prefixed with "COL"