disabling two-column pager

I'm a huge fan of mutt-kz, and couldn't live without it. However I think it includes by default an email pager which takes advantage of terminasl with > 80 characters in width, to display two columns (in my case, separated by a red pipe | character). I'd like to disable this if possible, either at compile or run time. Does anybody know where I should look to do this? d.