installed v5.1 a few days ago ,remote /ws4/l lf9/ lf13/ hf9 and mi6,all went smooth . went on the beach to detect me and the wife so one has the ws4 and the other the remote we used the low freq coils we did two hours,first 40 mins ok then the remote flashes no coil ,about a minute later the wife's ws4 with lf9 also no coil id did this to both of us approx every 10 to 15 mins or so,could not check the hf9 coil as it sent back to supplier for repair.
has anyone else had issues with the older coils
has anyone else had issues with the older coils