Tube Rolling For ASL Hurricanes

I have been considering a Hurricane. What happens to the amp when a tube fails? Does it blow a resistor or you simply replace the bad tube? Are there any reliability problems?

I lost one tube KT88). I never realized it. I found out when I tried to biais it. The meter read 000. I just got a new tube and that was that.

Hi RB:
It's been forever since I posted, I see.

I did put in two other types of tubes: Sylvania 6SN7 and RCA 6 SN7.

I didn't like the Sylvanias as much as I thought: they're certainly "extended" on top, but it seems a "glazed" sort of extension, besides which the treble seems a bit "white." Also, the body of instruments in the lower midrange/upper bass wasn't quite right. I replaced it with an RCA tube and it sounds fine.
I'm not much for the tube-rolling experience. I DO understand they "change" the sound, but I prefer to listen to which tubes come with it: also, my partner, a pianist and baritone opera singer, usually tells me which tubes make the piano sound most like a piano. That way, I don't bother wasting my time trying to create a "flavor" that I like. Frankly, I was always happy with the Chinese tubes that came with the amp.