Is rectifier tube arcing a problem?

I'm surprised Audio Note would market these amps with what seems to be a design flaw. Are others experiencing same issue, and if not, I'd think it could be improper assembly.

@sns 

it is a Audio Note Kit, not the Audio Note UK.  However, there is a bit of a history.  What I learn is that the circuit of this monoblocks is initially designed by Andy Grove who is a prime engineer at Audio Note UK.  

fiesta:

Not going to happen on my end, so your decision is all on you from here on.

You remind me of a recently new "member" who posted that my abbreviation of Audiogon as A’Gon was "pretentious".

DeKay

@jaytor 

i would say I like them.  I sold my X5 before I bought this amp.  I am using them to drive a pair of JBL 4341 now.  I only have 3 power amps to compare: a custom built 300B by Otomon Lab from Japan using Luxman mq-300 schematics, the ANK, and Coincident 211 Dragon.  I then sold the Otomon Lab.  The ANK sound as good as the Coincident yet different.  The ANK are faster, a bit lighter, better mid range, and a bit more holographic.  The Coincident also sound very good.  It is a 211 push-pull delivering 75W per channel.  It produce a lot more power but also sound very lively and holographic.  I had a McIntosh MC 275 IV before.  It is a KT-77 push-pull, and it sounds boring and flat, which leave me an impression that is the characteristic of a push-pull amp.  It is not the case for the Coincident.  On my Harbeth 40.1, it will be clear it needs the Coincident 211.  But for my JBL, both sounds great.