Nice bump. After all of my research, I've found that there are no other RA2 compatible 3d modelers.
use notepad3D studio max 4.2-5.1 are the ONLY versions that work with RA2Times goose repeated that statement: 267
3D studio max 4.2-5.1 are the ONLY versions that work with RA2Times goose repeated that statement: 268