Could someone explain returnless systems?

[demonpixel]

Hey guys, talked to Retrotek yesterday. They said they send out the systems with the linkages because it helps setting idle for some people. They said that the reason why it's shutting off when i come off idle and hit the slop is because the secondaries are not opening at the same time the primaries are off idle. So John, you were close!



On my Retrotekspeed efi system, both the primaries and the secondaries need to open and close at the same time. Otherwise the engine can be starved or the opposite, flooded.

someone mentioned that a grommet would eliminate the slop. do you guys know of any other creative ways to get rid of it? i was thinking about using epoxy but that will look pretty ghetto...