"If Howco doubled revenues that would not mean they'd double expenses for sales, general and admin. "
They do not break it out in enough detail to confirm that. No, SG&A would not necessarily double.
"we both read, there's a trailing six month $3.6M reduction year over year in sales, general, and admin costs"
OK, so aside from an accounting anomaly, please explain exactly how they did that? Did they fire 50 people?