Update!  So I am back to 4 working cards!  Made an odd discovery last night.  If I run them with the 17.30 driver they tend to be unstable and have serious issues.  If I run them with the 17.11.2 driver they work just fine, mind you they are an average of 70 h/s slower on the 17.11.2 driver.  I had read somewhere that you can toggle the driver for mining in the global settings but I can't seem to find the option in AMD settings.  Tonight I will try to add the 5th card.  Also, I am mining using Claymore's AMD GPU miner for Cryptonight.  Is there a better miner out there that supports 6 cards?

Thank you,