Enviro Omega - Auger Motor Speed?

[Domino]

I'm looking for a spare Auger Motor. The 3 RPM motor seems to be scarce. I also see note like "If your Omega came with a 3 RPM Motor".

Was there a change at some point? Could I run a 2 RPM and reduce the BTU down to 60,000 from 70,000?

Does anyone have an Omega without a 3 RPM?

My Omega was manufactured Nov/07.

At this point I can't get to the auger motor without significant effort to see what I currently have. But if push comes to shove, I will

 

[Domino]

P.S. The parts diagram show a 4" exhaust pipe, my Omega has a 3" and this matches the cutout on the rear panel.

I bought the stove used, so I do not know if someone changed the original Auger Motor.