American Viking

First off I strongly suggest you get a bias probe...
Second off, 30/470=0.063, 0.063 x 0.7=0.044 for 6L6
25/470=0.053, 0.053 x 0.7=0.037 for EL34
Your bias current should be 37mA
I'm not sure you are having the correct formula so here it is
A/B=C CxD=Desired Bias
A=plate dissipation of the tube (25% for EL34, 30% for 6L6, 5881)
B=plate voltage checked on pin # 3
C=Do not exceed limit of bias
D=0.7, multiplying by this gives you the normal starting point for proper bias 70%

As far as checking the bias with the tubes not installed... the reading doesn't really matter because it doesn't fit into the bias equation and on top of that that's really not safe. You can only check the bias when the amp is On, off of standby (play mode) and has to have a load (a cab) hooked up to it. When you pull tubes you are changing the impedance of the amplifier output so you're messing your transformer up by doing so.


What you really should do is return the amp to it's stock values, put back all the stuff you messed with because your amp is running a "cold" bias right now and should be getting hot but not that hot. I'm not sure what's going on but like I said before it was not necessary to change out all that stuff right off the bat. You should do some more research on this because the first place you received your information definitely seemed to lead you in the wrong direction at first.
Keep us updated on everything and we'll try to help you get this thing back to 100%.

__________________
-I'd rather be a good liver than have one...