Paul,
OK!~ here's a quick and dirty drawing of the variation of your inlet -
room permitting!
You will notice there is no unnecessary turbulence areas at low throttle.
George (down under)

Why is this better? It will interfere with the exhaust manifold
for one thing. The throttle linkage becomes much more complicated.

There is just as much "turbulence areas" as if
you slid the plate from side to side. Slide throttles like mine
have been around for near 100 years. The "turbulence areas"
do not seem to hurt. Slide throttle engines almost always make more
power.

Paul Lamar

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