Getting back to RCplanes12 original question on inverting engines: Someone over the years I have the utmost respect for in the engine department is Clarence Lee. Clarence wrote a column in Radio Control Modeler (RCM) entitled "Engine Clinic". The June 2005 issue of RCM may be the last as it appears RCM may no longer be in operation. It is wonderful to note however, that Clarence and Engine Clinic have re-surfaced in the April issue of Model Airplane News! "Low and Behold", one of the letters written to him is a discusion on inverting engines in a P-38! I am in agreement with Clarence on his opinions on inverting. To those of you whom are successful with your inverted engine installations, I say great and I admire your tenacity to stick to your guns!