Hello fellow Pullers, I am having an issue I'd like to share and seek advice on. I am on a two camera setup show. Alexa mini, latest stable SUP 5.4, both with SXU hand units and Arri Cforce Plus motors connected to LBUS. Cooke S4/i and S4 mix. On prep a couple of days ago, we started having an issue on one of the cameras, where whenever the system/motor was first initialized it would ask for calibration, as it does, I'd press calibrate (on hand unit or on motor), it would start it's thing going towards both ends of the lens, however, when it reaches the second end, instead of settling and being ready to work with the range mapped, it stops right there at the edge of the second limit of the lens and suddenly goes on to ask for calibration again as if it didn't have just did that. This loop went on for a while. We lowered torque to minimum and then changed radio channels. Eventually it came back to normal operation. On the same moment that A camera went normal, B camera started doing the same thing. I fiddle with torque for B cam motor and it seemed to settle after a while. The problem is that, on our testing day, A cam started doing it again, (can't tell now whether they moved torque up again, I was on different location) so A cam dropped the Wireless and went FF5 for the rest of the test. Today is day off, but we are now weary of having this suddenly coming up during a shot as principal photography commences tomorrow. Although the changes on radio channel seemed to help fix the issue, honestly, I don't think it is related, and I am more geared towards either a problem on the reading process (maybe due to high torque, although S4/i are smooth as butter). It happened with 3 different SXU hand units and 3 different motors (2 cforce plus and one mini). I truly appreciate any insights as to properly identify why this is going on and find a reliable fix, other than moving to other system which is unfortunately not an option due to budget constrains. One more info I think is relevant. The motors were all set up in a position as to minimize excessive force on either end, that is, having an imaginary line crossing the centre of the rod and the tangent to the gear/lens interface. Fingers crossed here for any insights. Have a great week everyone and thanks for having me here.