Page 18 of the Sams manual has a resistance chart showing what resistance you should measure at each pin of each tube. It's worth spending a couple of minutes to check the resistances on the 6U8A tube and compare them to the chart. These readings involve more than individual resistor readings.
If you don't have the Sams manual, send me an email via
http://antiqueradio.org/contact.htm and I'll mail it to you.
Phil Nelson