Here yes?
I like how you referenced the horsepower equivalents from transforming mythic Europe. I'd like to stick with my elephant description because I find it more descriptive and it ends up in the same ballpark as far as strength.
I can change the base level to 3, Andreva has the arts to do that. What gets me is looking at the Re Te guidelines there are three options base 1 move in a natural fashion, base 2 move in a slightly unnatural fashion and base 3 move in a very unnatural fashion. What goes where? I see in the example spells unseen arm apparently uses base 2 but unseen porter uses base 3. If you're moving something magically how can you justify a "natural fashion" at all? Perhaps a spell that topples objects so they fall? Does it need to be so subtle?
I chose base 2 because I judged not moving at all to be less unnatural than levitation and thus a lower base level. Upon reflection an object sticking in mid air even when you are yanking on it is probably just as unnatural.
I'm also now changing my mind on the movement spells requiring the +2 magnitudes for metal objects. The example spells don't use this.
I'll post revised stuff later.