RE: Pletty Advance mystery
I had the same problem, back in Oct of 2012, I switched out the OS esc, and replaced it with a HV 85. Still the same problem. it turned out to be the Sky Lipo 4400, i checked the batteries and they
charged up just fine with low IR. 4 packs, and they were all 4400 40c, those packs just stop work, I could only get like 5 to 6 min. I also have a Sky Lipo 20c pack that i'm still using. I got that pack
back in 2010. So try a different set of batteries, the problem should go away.