I've had 2 shoots with the RP JrX now and thus far not a single misfire. That's well over 1,000 frames without misfire. That's a better batting average than the Gadget Infinity Cactus V4 that I've been using.
A few things to note about the RP JrX though:
-The dials/knobs on the transmitter register minor changes but not miniscule changes in power levels. For example, if you move the dial 1mm or less, you will not perceive a change in the power levels. I checked this and watched the green light on the receiver flicker with each dial change greater than 1mm. I confirmed that if the green light flickers on the receiver when you turn the dial on the transmitter, then the "message" to change the power settings has been "received". It would seem that more than 1mm changes in the dial will register "real" changes but anything less does not.
-Getting used to dumping excess power. I noticed that I decreased power settings a lot without dumping the excess power. Then I'd wonder why the change in power was not realized in the frame. Having power controls at the fingertips requires that you also dump excess power from the transmitter when decreasing strobe power.
-There were seemingly instances where changes to the power levels on the dial of the RP JrX transmitter did not register on the modeling lamp and did not register on the frame (strobe output). I have been unable to confirm this and/or replicate this issue. I believe this might be a function of forgetting to dump excess power when power settings are changed. I will monitor this.
-There are seemingly no issues with the RP JrX and the modeling lamp on the AB800 when connected to a Vagabond II. I heard stories where the modeling lamp would flicker. This is not unusual and not particular to the RP JrX but instead a function of the AB800 drawing power from the Vagabond II. I will continue to monitor this as well.
So far so good. I'll keep an eye out for things and maybe write a long-term update on the RP JrX.