I am considering the purchase of the Saito FA-125a to install in a CMP Hellcat. I would like to install the engine inverted. This would be my first 4-stroke experience but have heard that they can be finicky when installed in this manner. Any advice, tips, or suggestions?

get the center line of the tank in line with the center line of the needle valve.

Your advice is appreciated and will be followed

Check this out

http://saito-engines.info/index.html

Thanks for the reference to that website. I have added it to my favorites. I'm sure it will have prevented me from performing corrective surgery on the model. (now... how was that... measure once - cut twice???