Hey not many people have a hsp but the way I ran mine in was on 15% nitro for 5 tanks with the break in procedure than after that replace the glow plug with a medium hot plug and run 25% nitro
i just think that there not the "top quality" but i still think there very good for the money i have the hsp tryanno and my freind has a hsp warhead actually 2 of them and all the 1/10 hsp models have the same engine but the hsp tryanno has a 1 speed and you should just go to a hobby shop in the local area or just 2 australian sites i know is www.rchobbyestore.com.au and http://www.hobbyking.com/hobbyking/store/index.rc