I found some literature about diffuser plates and quickly came to the thought that i MAY not have enough discs. I made a thread in the want to buy section to search for extra plates but so far have not had a reply. So to make up for the discs i dont have, i got clever and increased the spacing with washers. Not perfect but its a place to start from. Weather tommorow should be nicer so i can play around a little. Maybe i wont need washers at all and can get away with just 12 discs.