Best of luck with your efforts. Two Q's.
1) If you haven't already, you should look up another OC citrus guy, Cliff Prather. He recently gave a nice talk on the AT&SF service to the groves in OC at the Santa Fe Western Archives Mini-meet back in March. If you didn't attend, you may at least wish to contact him and beg for his slides. I see he can often be contacted via Yahoo's Citrus Industry Modeling Group.
2) Have you completed your modification of the Bachmann 2-8-0 coal tender to oil? If so, how did you do it and what are the specs for the tender you are modeling?
While most of my Bachmann 2-8-0 will get swaps to vandies, I have need for at least one oil box for SD&A Consolidation #104. To make such, I just secured a copy of the Espee's diagram for this 90-R oil tender from the massive collection of Mr. Allen Stanley.