All right I've narrowed the problem down to my definitions in the CSS I use to controll the header. I had the wrap class defined as follows.

#wrap2 {
position: relative;
background: #fff url(wrap-bg.jpg) repeat-y;
width: 85%;
min-width: 900px;
margin: 50px auto 0 auto;
text-align: left;
}

I adjusted to:
#wrap2 {
position: relative;
background: #fff url(wrap-bg.jpg) repeat-y;
width: 100%;
min-width: 900px;
margin: 0 auto 0 auto;
text-align: left;
}

Changing the margins and the width %. I can live with the margin change, but can any give direction on how I can mainting my 85% wrap and still align the menu?

You can see the board in developement at:
http://site.huntingpages.com/asplist/

Thanks for the feedback.