I am new to nitro and have a Wasp .12 off road i am struggling with. I ran about 4 tanks thorough at what i thought was fairly rich settings. Yesterday i could not get it to keep running. Temperature was much warmer so i leaned it to 2.5 turns out on the high speed neddle. It would start but as soon as i reved it once it would die. I am thinking it is to rcich but i dont want to ruin a new engine by leaning it out any more. If there is already a good thread on carb tuning please point me in the right direction because right now i am very frustrated. I guess i should have bought an OS! Thanks in advance for the help.