I'm sorry to harp on this but I really do want to save you some time. The left and right hand positions still don't sound right. I assume you are standing in front of the carby, if so then I assume your left hand will be on the oiler and the right will be on the throttle?
** Bob, I will be operating the oilier with my left hand and the throttle with my right. I appreciate your concern for operating the mill. I to want it to be easy to operate, so don't feel like your harping. I like constructive criticism. Different eyes see things I don't see.
If you plan to push from the oiler handle it is too high and will want to tip the mill over.
** I though of that as well when I added the extended torsion bar that holds the throttle lever. The leverage is very good with that bar and should be easy to keep the mill from wanting to tilt forward or backwards. If once I start using the mill and I can't control the mill from rocking forward/backwards it will be easy enough for me to add a handle lower and set it up with a cable lever to operate the oil lever.
Maybe a photo of you holding onto it will help explain what you mean?
** I'll do that when it's not raining outside and I can bring the mill out of the garage.
Anyway, you are right - 10 minutes of working with it and you will either find a way to live with it or modify it accordingly. It's a very interesting design and provides much food for thought and inspiration for us all.