[R-390] R390A Hissing RF Deck

[Thomas Hoyer]

Working on a 390A. Have not had this issue in the past with my other 390A's, it's an odd one (at least for me)
This 390A is very clean and shows no evidence of past work, even the green screws have no chipped paint making me think that the modules may not have been removed very much if ever.
As typical, I go through each module and check for / replace any out of spec parts including the caps around the filters. I also check the tubes on my Hickok. I rebuild the electrolytics on the AF module too.
This one powered up ok but no received signal just a lot of hissing. Working backwards from the AF through the IF all seemed good. Once I got to the RF I was not able to get a signal through T208 at either 455 or 3 mhz. Resistance checks of T208 show the secondary at 15 ohms - not good. Removed T208 and bench verified that it wasn't passing much of a signal. Found a donor T208, bench tested much better, installed it and now the hissing sound is louder! Checked the parts (R's and C's) around T208 and the 2.2k resistor was measuring 3.3k so I replaced that. 
Removing the PTO connection from the RF deck lowers the hiss but it is still there. At this point I decided to shut down last night.
Looking for suggestions. Thinking of removing tubes one at a time to try to isolate a section.
Thoughts from those more experienced then I?
TomW3TA