jQuery Grid Plugin - jqGrid

I am using the default settings. I have a three column table. I noticed that depending on what length of data is in table the column header width will not match content width sometimes. Sometimes there is no data in column and then widths do not match. If i have consistent data length in all fields then content and header seem to match. I used the same settings in your demo, but I cant get my content width to match the header width most of the time. Followed the install file in the downloaded dqgrid file. I played with shrinktofit and autowidth setting.

I did a band aid. I set shrinktofit to false and set column widths. Things seems to be lined up, but now a portion of the right column is hidden and users have to scroll to the right a little to see entire right column. What am I doing wrong?