The Auto touch-up paint is what I used. I sprayed it after a thorough cleaning with alchohol and a chamois cloth. First I primed it then did three coats of the touch up paint in a nice beige color that matches the ashwood case really nicely. The paint has held up well three yrs so far. Other than that I did the tweaks on the Bottlehead site and it just plays along with any problems so far. In a nod to Wayne it does have a slight noticeable hum; although when I sit twelve feet back I can'tr hear it at my listening level. I would build it soon in case there is a problem. You never know if a trans might be bad; it happens. And the boards can have a problem although it is very rare.