Erice , to say the least that was a excellant review i have the plane ordered and there wont be any need to fool with the cd rom now that you hav e covered all the basics for installation. I had a couple qestions i am installing a RCS 1.4 gas and it weighs around 2lbs 4 ozs with muffler and ignition i was wondering what the os 160 weight was with muffler . I am putting servos in rear also . I know the 1.4 wont give it great unlimited vertical like the 160 os and i might reconsider and get the rcs 1.8 I have heard the 1.4 is a power house but i like extra power when you need it. Thanks for the review and please let me know os 160 weight.