hey guys! i just got a sirio aac 5-port, the old one... i used to hate this engine just coz i dont like it... but since i cracked open my jp engine during practice yesterday, i had an hour to break-in a new engine and yes its a SIRIO. i had no problems during the break-in process 4 tanks, 2 on the bench shutting off the engine every 2mins, and the other 2 running rich at the track at half throttle. call me crazy but i did race the engine after that a 2-hour team race hehehe! i must say i never really cared about the engine during the race, but after ending up 3rd place it made me look back on my reasons for hating this engine. it is a good one! would anyone know the initial settings of the engine? and should i change the conrod after every 5 liters of 25% fuel?