Hey - actually I have no clue how to fix them but had tasked myself with learning this process over the Holiday
 
In going over them systematically it seems that most are missing either the shadow mesh, a black engine texture, or have an odd tag.  I'm fairly confident that I can fix the above errors as there are many threads re: these issues on the forum and   . . . the tools from PEV.  
 
Here are a bunch of missing KUID's - I don't think I got to the bigger locos on the generic page
 
For the Baldwin Light 2-6-2
 
BLW Prarie pilot,<kuid2:96914:504830:1>
BLW Prarie trailing,<kuid2:96914:504832:1>
BLW Prarie drivers,<kuid2:96914:504831:1>
 
For the Baldwin Light 2-8-2
 
blw con b0,<kuid2:96914:504860:1>
blw con b2,<kuid2:96914:504862:1>
BLW Consolidation drivers,<kuid2:96914:504861:1>
 
Baldwin Medium 2-8-0H
 
blw con b0,<kuid2:96914:504860:1>
blw con b2,<kuid2:96914:504862:1>
BLW Consolidation drivers,<kuid2:96914:504861:1>
Baldwin Modern 2-6-0
 
blw con b2,<kuid2:96914:504862:1>
blw md260 b0,<kuid2:96914:504800:1>
BLW modern 2-6-0 drivers,<kuid2:96914:504801:1>
Baldwin 4-6-0
 
blw tw b0,<kuid2:96914:504840:1>
blw tw b2,<kuid2:96914:504842:1>
BLW Ten wheeler drivers,<kuid2:96914:504841:1>
 
Chris