I haven’t looked at any logs but all the stuff I have posted about focusing an sct with the primary knob would apply to RASA also. There is no need to shoot in the dark regarding number of steps for backlash - because you should just watch the knob turn and make sure the backlash size is 1/4-1/2 turn of the knob - at least.
And I would use about 9 steps and set the size so it goes about 5 degrees per step.
Your value of 300 may be only a few degrees turn of the knob - I don’t know.
And as the focus curve is taken, the numbers go down - so make sure the knob is turning CCW as the numbers count down. And make sure the backlash compensation only kicks in once at the start of the curve.
You just need to watch the focusing knob to get a sense of how many steps it takes to do a full revolution.
The numbers I give are for a typical celestron sct - and they may be different for RASA.
Note that any time you focus with the primary knob, you are effectively focusing “at f/2” - because it’s the f/2 primary that’s moving. That means f/7, hyperstar, rasa - are all similar when focusing with the primary knob. But I think the RASA focuser might be better and/or different - I’m not sure.