heh Richard L---I have the os 1.2 for the cmp hellcat---would you let me know what you think---ready to break in the 1.20 os fs...lots invested into that engine. Yopu mentioned the Hellcat would be nose heavy with that engine and the alum mounts. Seems though we can always 'easily' move the cg aft>>anyone comment..batteries, etc, to slightly aft of the wing area in the fuselage. What fue tank did you use??>>>>>>And esopecially what orientation didn you mount the engine?> Head at 90 degrees to starboard, or head at "6'o'clock"?? If you ran the engine head at 6 o clock, did you run into hydraulic lock problems>>>??Thank you--Edward A. Sarkisian