Digital BW, The Print

A couple more questions ... I have read the info on the MIS 
website.  To fill the carts from the bottom it looks like I will 
need a syringe (which I have), rivets (which I assume I can get from 
the hardware store) and a device to attach to the syringe to insert 
into the carts.  Is there any type of device for that that would be 
available locally?  If not, I can order it from MIS but it would be 
great if I could get started on this sooner.

Also, the rivets ... do those stay attached to the carts even when 
they are installed in the printer?  Or are they removed before 
installation?

Thanks,
Jenny