I've got an extra BE controller if someone is looking for one.
Also have a few extra USB interfaces for Prisma's. Tubes may be able to use them and then run cgminer instead of using the BE controller with Tubes. anyone test this?
I have and the tube runs great under cgminer. Only thing you need to do is pass --bet-clk 26 to cgminer in-order to set the clock to 270Mhz.