I've been telling this guy the same, RC gas engines are specially built for that purpose, also the size is different, RC engines are smaller than a regular convert trimmer engines this does not mean that Trimmer engines aren't good but nowdays with all those brands out there you can choose size and the $$ you want to expend.
Well I hope he changes his mind and get a gasser of any brand instead of deal with this little engine.

Thanks again

Daniel