odd novak gtb problem

[quincey]

raced my losi last weekend and it went nuts in heat 3,its got a novak gtb spektrum spread speedo in it and when i hit the throttle it sat there and when i brung the stick back to neutral it just shot off like an idiot,i changed the speedo to a nosram one and the car was fine after that.
how could it change its settings by itself? its been fine uptil now i just dont trust it no more.

[Wraggy]

mine did that the other week when i programmed it to lipo's since then its been fine . just switched it off and on again after the change and not had a problem since