Mid range burble
BME 102 engine has good idle and ripping 26X10 prop at full throttle, when first started it has to warm up a bit before it will take throttle so I think low end is lean enough. The engine still has a mid-range burble that that I would like to reduce, I may be able to go a little bit leaner on the high end needle but I don't think very much leaner, wondering if there is anything else I can do to reduce the burble.