Believe me, nothing is going to totally eliminate that problem except a carb change.
Electric pumps, anti siphon, regulators, spacers, non of it.
There are only two things that really help, and those are a spacer and a return fuel system and they only solve some of it.
Holleys don't have this same problem due to the bowls being out away from the intake farther so they don't get as hot.
The Demon is almost exactly the same design so it should cure it.
Sure some will say "I used a thick spacer and cured it" or "put a return system on it" but this conversation has been going on for years and I have yet to see a solution that works for all of us.
That Demon carb is close to the same design as the Eddies fuel bowl wise, but the composite body may be a big help.
I would still use an insulating spacer even with that carb if I could.
