I've not had that experience either. My lads is perfect, its only running a 17.5 but several people at our local club run them on much hotter motors (6.5 - 5.5 in 4WD's) and not only are they fast but they stay fairly cool.
The only strange thing I've ever seen is a friend last week had his stop mid run with a red flashing led, he switched it off and back on and it was faultless for the rest of the evening.
As has been said, it would be great if they produced decent instructions but for 30 quid, plus a tenner for the box? Not bad value is it.
I've ordered one to try, then keep as a spare. At that money I can justify having it sat in a box just in case, I couldn't a £150ish unit. I assume it won't be as good as a branded unit but if it lets me finish a meeting should the worst happen, I'll be happy. When I've run it I'll report back.
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