Guys, I have checked and checked and rechecked... The carb is ultra clean no blockages...now I dont know how to check if the diaphragm is faulty?? Looks ok to me. The carb butterfly is in its correct position with the shaft screw facing inwards. In my last attempt at starting the engine, it wants to start reverse??? I am totally stumped. Its as if the engine has a mind of its own [:@]

Seems like we have a lemon in our hands.... Unfortunately, this engine has run out of warranty as it sat in my workshop for a long time. I have written to RCshowcase for some solution...lets hope for the best.