'01 XC300 Power Valve in backwards

[timlh]

Hi, Wondering if its possible to put the power valve in backwards. I just did a top end rebuild and bike runs ok on the bottom and mid but chokes out from 5/8 to full throttle. I took the pipe off and the power valve cover linkage side off. It was all hooked up and works but then I realized that its wide open with the bike not running. If I manual rotate linkage it closes and when I let go of it the power valve springs open. I would have thought the none running position would be closed to increase the low end compression. Please help.

Thanks, Tim