Thanks everyone for the very nice comments. I have been wanting a 600x2 for a while now.
600x2? Have a spare 300x2 lying around?
Yes and no. I have two 300's. One has the same problem yours does and the other I am not going to part with. I find it too convenient to have a backup Sunfire in case I blow one up.
I do have a Carver TFM 55 I will be putting on the market to sell.