SeeYou wind calculations

Here in Hood River, Oregon, USA, we usually have lots of wind and
sometimes when I view the flights on SeeYou, it shows the wind very
accurately and sometimes it doesn't. It doesn't seem to matter if
there is a lot of circling on the flight or not. Sometimes when I
first look at the flight it doesn't show any wind and then when I view
the flight again, later there is wind shown. Has anybody else had
this problem? Does anybody have a suggestion for a fix?

Thanks