When I said "Steelwood" I was refering to my genius friend who used it and shorted his preamp. Very fine particulars find its way into the tube sucket and it was 4th of July
The steel wool is not the problem here don't you think?
Your genius friend, granted that he's a real genius needs to buy or acquire some goddamn common sense.
Think about the question of the original poster, then ask yourself if your response was appropriate. If it is, then suit yourself. I have nothing else to add.
regards,
Abe