Dears,

I bought a new DLE55 engine on my 27% extra 330, the engine just finished its first gallon should I start adjusting the needles as I haven't touched the needles yet it's still with its factory settings, I also hear a strange sound in the engine as if it tends to stop while runing I hear it on idle and even if I increased the throttle to a bit below half I still hear it, is it because I need to adjust the needles? cause one of the pilots at our field told me so.



I use 92 octane gas and the oil mixture is 30:1.