I have this diesel in my fleet as well. It's awesome. You will love it! What other GEVO diesels are in your fleet?
Sorry, I misread your original post. The Monongahela is the reason I'm hooked on tracking the real heritage units! I grew up in the 80's and 90's not far from the Monongahela Railroad. I thought it would be nice to own the heritage diesel so I purchased the MTH version at the Greenberg Train Show back in November. In January I noticed some railfans posting pictures online of the heritage diesels. They pointed me to the heritage tracking site. The very next day I noticed the Monongahela was coming through town so I went out to see it. It stopped in front of us for about 20 minutes. I've been hooked ever since! I purchased the Wabash at TCA. They are awesome diesels!
You started with a great diesel!