No problems with flame outs here, From my experience with any nitro motor there usually caused by incorrect LSN adjustment

Wasn't bashing the Vspec, I do expect you'll find though anywhere you can manage 10mins using a Vspec the GRP will do 10mins too. A few locals use Vspecs and although I can't get 10mins with mine yet (still trying though as im sure the JP-4 isn't the most fuel efficent pipe, I'm still using the 8mm restricter and it's not fully broke in yet) I can easily out run the Vspec's between stops. Although again that probably isn't completely down to just the motors.......

There both quality mills, I simply preffer the GRP.......

Rod