Sometimes there are filament rolls (prusa for example) that have more than 1000g in a 1kg roll. Sometimes they are 1010 or 1013g. It would be nice to be able to have the filamnet remaining be over 100% in these cases. The workarounds are:
Create a custom spool size for each spool that is over 1000g, or wait until after a couple of prints and then do an adjust weight.