Contour Enthusiasts Group Archives Forums Modifications Duratec Performance Terry Q again. The "restriction"

Yes to both questions.

I pulled off all the butterfly valves and then just rotated and pulled the shafts until they came out. More scum buildup hinderes it so you may want to clean really well first. Then there are two spring-loaded contacts, one in each of the thick dividers. they com up from the bottom to apply pressure to the shaft upwards, probably to keep it stable. I used a piece of angled coathanger to push them down when reinserting the shafts. Clean the area real well before putting the shafts back. Thats it.

warmonger