I also have a TG18 ( given to by a friend) The settings were also bad, (I have lots of exp in nitro engines) the two screws are the richness settings , and take messing around... The best thing to do is screw them completely in and then Make quarter turns on both screws till it has an attempt at firing, and then continue to find the best setting ( Mine was about Half way..) these engine go like scalded cats on a good adjustment
Jon (email is ''jon_jelly@hotmail.com'', December 2008