It is possible to reorient the VSV ports, although adjusting the modulator is easier. Beware that you'll be dealing with old plastics, so things may break, be ginger. Sorry for the lack of pictures, but I'll be as descriptive as possible. Here are my procedures:
-Remove VSV from IP. (3/8" wrench)
-Remove screw in side panel of VSV. (Slotted screw driver or 8mm, side panel must rotate CCW a bit to disengage)
This exposes the plunger and cam wheel. Be careful not to allow the cam wheel and spring to pop out, but lift the plunger off the cam wheel.
-Using suitable tools to do so, pry open the four plastic tabs holding the port body to assembly.
I opened one tab at a time, prying underneath the body with a second flat blade. BE GINGER.
-Once the port body is loose from the tabs, pull the body up only enough to disengage it from the cross cog in the body.
-Rotate 90* in the intended direction and slide the body back down, engaging with the tabs.
-Reset the plunger on the cam wheel and reinstall the side panel.
-Reinstall the VSV on the IP
-Adjust as necessary
