Unlike our glow counterparts, gas engines are quite forgiving to power changes in relation to tuned pipes.
In glow engines, you use a good deal of expertise and a prayer to get the engine to transition from overly rich running to running on the pipe.
This also is the case in piston ported gas engines, though for different reasons. With reeds or rotary valve, float and constant vacuum carbs, tuning with pipes is child's play in comparison, and the carb follows the engine's fuel demand quite well IF the carb is set up right.
Since fuel injection is not (yet) an option for our small purses, we have to make the best of what we have. This requires a good understanding of what is going on inside the carb.
What I read in many places, is more like the lame leading the blind, both clutching at straws to make progress. So busy, there is no time to stop and think what is realy going on, myself included.
I have made glow fuel pumps/regulators out of walbro carbs, with exhaust pressure as reference on the membrane. Combined with a normal glow carb and tuned pipe, there hardly was a rich/lean "jump" to speak of. The carb just followed the fuel demand. So there is a lot of potential to play with without the need for fuel injection systems.
So far, The static tube reference pressure on the regulating membrane has worked for me in all cases, where other "solutions" failed. It is not a cure-all. Large pressure differences and turbulence at the carb  mouth entrance still can play havoc with mixture strength, so it is important to create a calm air zone for the carb to work in.