I am having a lot of fun working on the FT-101ZD and I think I can relate to vintage car owners a bit better.... 

Each step through the process, each panel you open, each board you investigate you find something that either needs to or can be tweaked.... 

The process is certainly interesting.  As a Microcontroller guy (3.3v and 5v are good... nothing to bite... no sparks.... just a silent wimpering death when you do bad things) dealing with vacuum tubes and high voltage capacitors if cause for a little anxiety from time to time.... is it discharged... will it bite?

 I have learned about the requirement to discharge capacitors (not the hard way.... the FoxTango group on Yahoo is a mine of information on how not to hurt yourself) and spent some time building a capacitor discharger from 10 x 1M 1W resistors in parallel.  This is based on the circuit at http://www.repairfaq.org/sam/captest.htm#ctcds.  The resistance value works out at 100k and 10W based on suggestions from Murray ZL3MH.  Never got the diodes and the LED to work properly but the rest of the discharger works fine.