All 2st powervalve?

just pulled the topend off of my 06 wr250 when I disconnected my powervalve I just un screwed it from the rod going down into the case. now when I go to reassemble every thing I didn't mark the position it was in in accordance with the piston at the top of the stroke. does it matter where that little plastic gear is or just put in the middle so it can travel its full stroke without binding up or anything

There are little timing marks on the pieces so that they line up. If you research on this forum, I think the WB165 install thread has images and the Powervalve adjustment thread has images. Its pretty easy to line them up and tighten it down in the proper position.