Registrations Management- adding custom field "Checked in" Field display lost

We have added some custom fields to our EB system. We want to display these in Registration Management. The problem is that when we add them we loose the Checked in field from the display and we can't scroll to the checked in field. The following screen shots show the problem we have
Here is the screen shot without custom field
 
Then we add custom field
 
You can seen the check in field has gone and we can't scroll to it. So I then set Organisation to not display in Registrants list as we do not need it here. Then we see the check in field back.
   
Now we get the checkin fileld back.
The problem is that now I would like to add another custom field. But if I do so we will loose the checkin field again!
There are other fields we don't really need such as Registration date and amount. However, these are fields you have no control over as to if they are displayed or not.
It would be nice if we could have contol over what fields are displayed or have the checked in field moved to left hand side of display so that it is not lost
 
Any ideas?