I just recived an old PT-60 from a friend at my field. Not long after I ordered this engine,
http://www2.towerhobbies.com/cgi-bin...&I=LXFV79&P=ML and this prop,
http://www2.towerhobbies.com/cgi-bin...&I=LXZ979&P=ML. I noticed after I ordered this prop that it is ment for 4 strokes. After getting everything installed I started up the engine and noticed an unusual amount of vibrations. Could this be caused by the wrong prop or an unbalanced prop? Any help will be greatly appreciated.