Hi!
I agree with Jester! No glow driver is needed on any glow engine if it is set up correctly.
I donīt know if the person asking is familiar with the "tank placement rule" or not but here it goes.
"The tank should always be placed so that the center of the tank is in line with carb intake orrifice when the airplane is sitting horizontally" (means in the flying position with tail up high).
If this rule isn't followed you cannot expect a glow engine to run right.