[Amps] sb220 question after mods

[N7uvh at aol.com]

Hi guys...
 
Been working on a sb220.. did the rectifer and choke mods. Replaced with  
Harbah parts.
I have noticed that i don't have a idle plate and grid currant.  All  seems 
to run ok.  10 watts drive on 40 meters shows .2 plate amps and about  .3grid 
ma.  I like to run my radio into the amp at about 10 watts for  100-150 out for 
rtty contesting.   Ran the roundup and all worked good  at this power level.  
i noticed that the right tube will glow some and the  left tube does not.  I 
also replaced the relay for mine was humming.   When I was putting it the new 
relay in I see that someone as added some caps  from the input coax sheild to 
the bare wire jumper from pin 1 and 3 on the  relay.  I hooked it back on.  I 
have not seen anywhere in posts about  this cap.  Is it normal to not see any 
idle plate and grid with the  mods.  I did pull the zener diode that was 
hooked to the rectifier board  and was wonder if that was keeping it with no idle.
    First time working on a amp.
tu for your information and work in this message board.
 
Pat 
n7uvh