Recently got my BC12d, and it has an a65 in it. it idles just fine at around 700-800 rpm, and it runs fine at cruise. However in the transition at around 1300-1500 rpm the engine runs extremely rough and lags. It doesn't matter if you push in the power slow or quick, the engine always stutters before...

I have a complete O-145-B2. It has 417SMOH. With mags carb exhaust and motor mount. Also have a truckload of parts also. Will sell pieces or whole lot as one. Make an offer I can’t refuse. Would possibly trade for something like a Rotax or similar. I purchased to install on a project, but is too heavy...