i have recently purchased a new CEN MG16 and i am having a lot of trouble getting the engine started i have been back to the shop twice and they get it going but whenever i bring it home it wont work HELP?

I had one of those engines before for my first engine...actualy i didnt have ANY problems with it, for the first try to start it, you might of fouled a plug from it being extreme rich for a new engine

All right how do i alter that (as you can gather i havnt had on before)

if you fouled up a plug you can replace it with a new one for better reliability.. sooner or later you're gonna replace it anyway

Have a read of this
http://www.rcuniverse.com/forum/m_5517128/tm.htm