[V8] 92 V8Q Heater core replacement

[Kneale Brownson]

Have you disconnected the plumbing in the cabin?  You take off the console sides and pull the footwell ducting off the box.
   
  Folks have reported success with the flaps by just inserting them carefully and keeping them aligned  while putting the sides together.  In the link to Chris Miller's 200q20v page bit on the heater core box (very much like the V8's), one guy glued strings to the flaps to keep them in place during assembly:  http://members.aol.com/c1j1miller/climate.html#Heater blower.

Fatdog1012 at aol.com wrote:
  Ok guys, got a problem here (yeah,yeah, I know, I always have a 
problem)...need to replace the heater core...have the plenum box loose so it juggles 
about 1/4 inch in all directions (broke the adhesive seal, I guess) but what am I 
missing to get it out; obviously something hidden holding it; 

2nd issue-once I have it out and replaced the book (more on that later) 
calls for special tool to realign the flapper doors...any suggestions (responses 
mentioning the 1920's will be soundly thrashed).