What specific Tsunami 2 Soundtraxx decoder is installed in the 44 tonner? It would be helpful to update the QuickStart instructions to facilitate choice in JMRI Decoder Pro.  Can the installed decoder be readily replaced by a Blunami?  I'm hoping it is a 22 pin NEM connector.  Thanks!  Great engine.  Already added auto bell and horn signals via Decoder Pro although CV's 31 and 32 are not visible for confirmation of CV values.