[Hammarlund] HQ-110C Questions

[Julian Bunn]

I have an HQ-110C that has a couple of problems, and am hoping for some 
help.

1) The IF alignment instructions talk about connecting the 455kHz signal 
generator
to the "bus line" of the mixer grid of V2, the 6BE6 mixer tube. What is 
the "bus line" -
I'm not familiar with the term? Which pin on the tube is it?

2) I want to add a new grounded mains lead. The existing lead is old and 
cracked.
Right now the chassis earth is floating. How should the ground 
connection from the
mains lead be connected to the receiver?

3) The choke L4 in the power supply is open circuit, and needs to be 
replaced. It
is specified as 8 Henry, 375 Ohm DC. I don't have an exact replacement, 
but I do
have a 5 Henry, 175 Ohm DC unit that I'd like to use if possible. Will 
this work, with
a high wattage 200 Ohm resistor in series?

Thanks for any advice.

Julian