problems with CJ's Premier 140 ? anyone

There's a Cj 140 offered @ audiogon at atttractive price & I'm thinking about it.
I did read numerous post about this amp having problems with tubes blowing up & bias resistors going out of whack. Anyone here with this particular amp having problems with these symptons ?

Whats the real score on this amp ? I heard its being discontinued. So short of a production. Makes me wonder.

Perhaps someone here can shed some light on this matter.

Thanks for inputs & much appreciated!