I have a DLE-30 v1 (side carb) that seems to be acting a little weird. First of all I can't really seem to get it to hold a low idle without quitting. I tried adjusting both the high and low speed needles, but the best I could get was around 2300rpm and only after the engine has warmed up. I am also noticing some inconsistent transition - it seems fine on the ground, but once in the air it wants to quit when I go to full throttle; the idle settings also seem to change all the time in the air. Last but not least, I have some pretty noticeable vibration at high idle (2400-2500rpm) which worries me. I checked the firewall and the stand-offs and everything is solid and all the bolts are tight. The prop and spinner have been perfectly balanced also.

The engine is relatively new with about 1/2 gallon of fuel ran through it. I am running a mix of 30:1 using Stihl conventional oil and an 18x8 Xoar laminated prop.