I switched all of my JR single RX out for dual It seems they work ok for a simple set up Trainers and 40-60 sized planes.But when I got into the larger stuff they wouldn't ground check for nothing .Maybe my set up but the dual conversion seemed to work fine .
I also used Futaba RX's to replace the JR's . I sent 2 JR's back in, they replaced the antennas and said there was nothing wrong .Must be right because there in smaller planes and seem to work trouble free .

The fail safe is my only hangup with the PCM RX ,All the ones I have seen has been a total lockout .Which would be just fine if the plane was headed out to sea or a open field ,but what about if its headed to wards the pits or a crowd of people?
I have been hit before with PPM and it was not a big deal to cut the throttle and land the plane .I guess the circumstances could make a difference in either case.