At your own risk (and I suggest you mark the disk with an engraving tool with a warning) you could ream the holes out to deliver the charge weights you want. Just be aware that it is a lot easier to make them larger than to make them smaller.
If the Auto-Disk measure ever gets a new owner, you don't want to set up a dangerous situation.
Frankly, I think Lee Precision is missing a good market in not selling a disk with just pilot holes for custom sizing by the owner. It should be white so it could be written on and
never mixed up with the standard disks. Possibly with removable inserts for labelling purposes.
Lost Sheep