Adding drives to LH3000

[Gangrene]

I am trying to add drivespace to my LH3000. Raid5 with 3 36.4 GB drives. I bought 3 more to add but the HP navigator says they are smaller. The current drives are 35,043 and the new ones are 34,731.

So what do I do? Can I create a new array? I have 3, so I can still do raid5. But how do I do this in the Navigator. It didn't seem to want to let me create an array in the NetRAID Assistant.