YESH U A right, the intake ridge may keep the plug clean per "wet flow" reports because the ridge keeps a vorticy away fro the plug. Such a vorticy allows fulee to wet the plug.
I done removed the ridges, and stuckwith the results. Just MAYBE I did enough ramdom-luck changes (wedge-pocket slugs) to be Vorticy-Free.
got a can of white spray paint and a shopvac/house vac hose?....
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