Has anyone noticed any correlation in the type of Minerals received to the % of total capacity you are at when you choose to receive them ?

For example: If my mineral limit is 20,000 units, will I get more of the expensive minerals if I receive them at the 19,000 unit level than I would if I receive them at the 5,000 unit level ?

Thanks in advance.

As it has been discussed before, the percentage of higher minerals in total minerals recieved per shipment is directly related to your level.