Arcade not coopoerating with current SKIN

I have a simple skin that looks like the following

$header
> simple header stuff with standard vb templates eg) headinclude etc
> includes start of <div id="main-content"> which is left aligned

PHP Code:

div#main-content {
width: 774px;
float: left;
} 

> main content container has forum home and all that jazz
> contains end of main-content </div>
$footer
> includes start of <div id="sidebar"> which is appears on right as a right column cuz the main content DIV is left aligned

PHP Code:

div#sidebar {
width: 183px;
float: right;
} 

Now... for the life of me.. i can not figure out why IBPROARCADE keeps displaying with a space to the right of the content but the sidebar is at the bottom as if the DIV is screwed up... shouldn't the main-content DIV still take precence even if there are TABLE tags gone awry in the arcade HTML? Any suggestions?

[stryka]

any suggestions?