RE: Moki Engines Thread
I'm a firm believer of belt and braces. I think a pump will most likely cure it, providing there is nothing nasty lurking in your carb or lines or air leaks. At the same time, using 1/8th" lines will also help. Keep us posted.
Just out of interest, have you seen the before and after running videos on page 1? Does your engine sound/behave like the 'before' video?